Question

(x+8) (x-5) find the product by using a suitable identity ​

Answer 1

Answer:

Hi...

Here is your answer...

We know that the identity

(x + a) (x + b) = x2 + (a + b)x + ab

Now

(X + 8) (x - 10)

[ Here a = 8 and b = -10 ]

Therefore,

(X + 8) (x - 10) = x2 + (8 - 10)x + 8x(-10)

= x2 - 2x - 80

Answer 2

Answer:

x^2-13x-40

identity is (x+a)(x-b)

=x^2-x(b+a)-(ab)