（1）计算：12+(1-2)2；（2）解方程：x2-4x=1．-数学

更多内容推荐

• 下列计算中，正确的是（）A．2+3=23B．6+3=9=3C．35-23=(3-2)5-3D．37-127=527-数学
• 32-8+12．-数学
• 计算：12-13-113．-数学
• 计算：(-3)2+8-18．-数学
• What he has achieved still _________ all the people around．A．astonishesB．astonishedC．astonishingD．as
• The old ladyher husband for forty years.A．has married toB．has got married toC．has marriedD．has been
• 计算：36-(-3)2．-数学
• By the time he realizes he _____ a mistake, it’ll be too late for him to change his mind.A．makesB．ma
• --HI, Tom. It’s a long time since we met last time. Is everything going well?--Oh, I _____ for the f
• （1）计算：275-327+12；（2）计算：2sin60°-cot30°+tan45°．（3）解方程：x2-6x+1=0．-数学
• His uncle went abroad in 2010, and _______since．A．has not been heard ofB．had not been heard ofC．had
• —I'm trying to find yesterday's newspaper. Have you seen it? —I'm afraid that I _____
• 解答下列各题：（1）计算：（48+20）-（12-5）；（2）解方程：x2-2x-4=0；（3）解方程：3（x-5）2=2（5-x）；（4）计算：3tan230°+2(sin45°-1)2．-数学
• 下列计算正确的是（）A．2+3=5B．3-2=1C．32-8=2D．3+3=33-数学
• 计算：(24+0.5)-(18-6)．-数学
• 计算（1）计算：(24+0.5)-(18-6)（2）解方程：3x（x-1）=2（x-1）-数学
• My parents have promised to come to see me before I _________ for Africa.A．have leftB．leaveC．leftD．w
• 计算：12-513+0.27+13．-数学
• 计算：3-32+218-1227+18．-数学
• －What’s that terrible noise?－The neighbours _____ the lawn.A．mowB．are mowingC．have mowedD．will mow-高
• After two hours of walking, they came to the camp site, ______ .A．hungry and tiredlyB．hungrily and t
• He went to the payphone to make a call but the phone .A．is brokenB．has brokenC．was brokenD．would bre
• 计算了列各题：（1）15×3520÷（-136）；（2）1327a3-a23a+3aa3-43108a．-数学
• Tom was disappointed that most of the guests _________ when he _________ at the party.A．left; arrive
• Isn’t it lovely to think that I _________ myself on the sunny beach tomorrow at this time?A．am enjoy
• —I’m sure Andrew will win the first prize in the final.—I think so. He _________ for it for months.A
• 下列等式成立的是（）A．a+b=a+bB．53x-43x=6xC．2x27x-6x3x4=3x3xD．3mx-5x=3m-5x-数学
• 15+603-35；17-28+700．-数学
• 化简：20-5=______．-数学
• ----I have got a headache. ---- No wonder. You ________ in front of that computer too long.A．workB．a
• Professor Smith, along with his assistants, _____ on the project day and night to meet the deadline.
• The discovery of gold in Sahara Desert led thousands to believe that a fortune________.A．is madeB．wa
• —Beg your pardon, but I didn’t quite catch what you said.—Oh, I to myself.A．have talkedB．am talkingC
• —Does your uncle still smoke?—He given it up. It’s two years ever since he .A．can’t have; smokedB．ma
• 解方程：（1）5x-239x+6x4；（2）用配方法解方程：x2-6x+5=0．-数学
• —Have the exam results arrived yet?—No. They were due to have arrived at the school today but appare
• The two friends ______on the Internet for three hours, and they would go on till the next morning.A．
• If you have a job, yourself to it and you’ll succeed.A．don’t devoteB．do devoteC．devotingD．not devote
• 计算23-3的结果是______．-数学
• The doctor suggested he ________with a serious disease and that he ________to hospital at once.A．be
• 计算题：（1）（48+20）+（12-5）；（2）445-35÷(-3410)．-数学
• Every year, the coal workers their lungs X-rayed to ensure their health. A．are havingB．have hadC． ha
• 计算：212-427+348的结果是（）A．0B．-43C．43D．±43-数学
• 化简|3-7|-|-7+52|的结果为______．-数学
• —We’ve spent too much money recently.—Well, it isn’t surprising, Our friends and relatives_______ ar
• The stars who advertise some false medicine _____ for the deaths caused by the medicine.A．are to bla
• — Are you a member of the club?— . It’s years since I .A．Yes; wasB．No; wasC．Yes; had beenD．No; becam
• –Were you at school when he came to see you?–Yes, I ______ a math class.A. was having B. hadC. am ha
• 计算（）-九年级数学
• 计算：32+23-2-3．-数学