Question

81(x + 1)2 + 90(x + 1)(y + 2) + 25 (y + 2)2
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Answer 1

81(X +1)2+90(X + 1)(y+2)+25(y+2)2

(81x +81)2+90x+90*y+2+25y+50*2

81x+81*2-90x+90*y+2+25y+50*2

81x+162-90x+90y+2+25y+100

81x-90x+99y+25y+162+2+100

-9x+124y+164+100

-9x+124y+264

hope help you please like me