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Math Challenge II-A Questions 1.27-1.29

 
 
KiangZhi Feng Etan的头像
Math Challenge II-A Questions 1.27-1.29
KiangZhi Feng Etan - 2020年06月4日 Thursday 15:05
 

May you please help me on these questions? For 1.27, I tried converting it into ab(a2-b2)+a2+b2+1. For 1.28, I converted it to m2n2-m2-n2+1+4mn, and I am completely flummoxed by 1.29. Please help me, and thank you!

 
luoRaymond的头像
Re: Math Challenge II-A Questions 1.27-1.29
luoRaymond - 2020年06月6日 Saturday 18:25
 

For 1.27, my hint is to add and subtract ab.

For 1.28, my hint is to split 4mn into two different terms.

For 1.29, my hint is to put the expression in a quadratic.


 
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