obliviousho2018 obliviousho2018

27-08-2019
Mathematics

contestada

The expression (x+3)(x+5) is equivalent to?

x2−2x+15

x2+2x+15

x2+8x+15

x2−8x+15

Respuesta :

Vividerla Vividerla

27-08-2019

Answer:

B. x^2 + 8x + 15

Step-by-step explanation:

Use FOIL

First

Outside

Inside

Last

F: x * x = x^2

O: x * 5 = 5x

I: 3 * x = 3x

L: 3 * 5 = 15

Combine like terms

5x + 3x = 8x

x^2 + 8x +15

B. x^2 + 8x + 15

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