Question

77. What should be subtracted from
ay -4a2 + 5a - 6 to obtain a2 - 2a +1?
(A) -a + 5a2 - 7a+7
(B) Q3 - 5a2 + 7a-7
(C) -Q3 - 5a2 + 7a+7
(D) a3 + 5a2 - 7a-7.​

Answer 1

Answer:

Let the no. be x A/Q (ay-4a2+5a-6) -(x) =a2-2a+1 -x=(a2-2a+1) -(ay-4a2+5a-6)

-x=a2-2a+1-ay+4a2-5a+6 -x=a2+4a2-2a-5a-ay+1+6 -x=5a2-7a-ay+7 x=-5a2+7a+ay-7 mark me brainliest