Question

Simplify : 2a (4a – 5) + 2 and find its values for (i) a = -9 and (ii) a = 3/4​

Answer 1

Step-by-step explanation:

=8a²-10a+2

When a=-9

8(-9)²-10×-9+2

=8×81+(90+2)

=648+92

=740

When a=3/4

8(3/4)²-10(3/4)+2

=8×9/16-15/2+2

=9/2-15/2+2

=-6/2+2

=-3+2

=-1

Answer 2

hope this may help you dear