I prepared some questions for my mock test so can I get answers of this below image with steps of - Maths - Comparing Quantities

Question

I prepared some questions for my mock test so can I get answers of
this below image with steps of Solving Please???

Vishal Kamboj · Accepted Answer

Dear Student

Q1  2x2+2y2-xy and other eqution is  4x2- y2+2xy let  ax2+by2+cxy is added to  2x2+2y2-xy  (ax2+by2+cxy  )+( 2x2+2y2-xy )= 4x2- y2+2xy (a+2)x2 +(b+2)y2 +(c-1)xy= 4x2- y2+2xy a+2 = 4 b+2=-1 c-1=2then a = 4-2=2 , b =-1-2=-3, xy=2+1=3it means 2x2-3y2+3xy added so can get  4x2- y2+2xy  
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I prepared some questions for my mock test so can I get answers of this below image with steps of Solving. Please???