Question

Multiply and rewrite as a trinomi please help fast

Answer 1

x² - 2x - 15

This is the third answer choice

Explanation:

(x + 3)(x - 5) can be multiplied using the FOIL method: First, Last, Outer, Inner

First: x · x = x²

Outer: x(-5) = -5x

Inner: (3)(x) = 3x

Last: 3 (-5) = -15

Adding everything we get
x² - 2x - 15

This is the third answer choice

Answer 2

• C) x² - 2x -15

Explanation:

`\tt (x+3)(x-5)`

Use the FOIL method:-

`\boxed{\tt \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd}`

`\tt x^2-5x+3x-15`

Combine like terms:-

`\tt x^2+(-5x+3x)-15`

Simplify:-

`\tt x^2-2x-15`

Therefore, C) x² - 2x -15 is our answer.

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Hope this helps!