Question

simplify: 2a(4a-5)+2 and find its values for (i) a=-2 (ii) a=1/2

Answer 1

FOR FIRST 54and for second - 1

Answer 2

your ans

8a^2-10a+2=0
8a^2-8a-2a+2=0
8a(a-1)-2(a-1)=0
(8a-2)(a-1)=0
a=2/8=1/4


or

a=1

but a is not equal to -2 and -1/2
okay

shukriya...