Question

( 3ab -2a^2 + 5b^2 ) x ( 2b^2 – 5ab + 3a^2 ) + 8a^3b -7b^4 for a = 1 ,b = -1

Answer 1

Answer:

{3(1)(-1)-2(1)2+5(-1)2}×{2(-1)2-5(1)(-1)+3(1)2}+8(1)3(-1)-7(-1)4}

(-3-2+5)(2+5+3)-8-7

(-5+5)(10)-15

0×10-15

0-15

-15