Question

Find the value of a , if 8xpower2 - 7x + a = 0 for x = -1 .​

Answer 1

Answer:

-15

Step-by-step explanation:

8 x ^2 - 7 x + a = 0

put x = - 1

8 (-1)^2 - 7 ( -1 ) + a = 0

8 × 1 +7 = ( - a )

8 + 7 = ( - a )

15 = ( - a )

a = ( - 15 )