Question

write in  (x + 8)( x- 10) in the expanded form *​

Answer 1

See

We have an identity

$(x + a)(x + b) = {x}^{2} + (a + b)x + ab$

So

We see

Here

a = 8 and b = -10

Thus we have

$(x + 8)(x - 10) = {x}^{2} + (8 - 10)x + (8)( - 10)$

$(x + 8)(x - 10) = {x}^{2} - 2x - 80$

This is required answer

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