thisisawada thisisawada

25-09-2020
Mathematics

contestada

(2x+3)^2-3(x-1)(x + 2)

Respuesta :

jimrgrant1 jimrgrant1

25-09-2020

Answer:

x² + 9x + 15

Step-by-step explanation:

Given

(2x + 3)² - 3(x - 1)(x + 2) ← expand factors using FOIL

= 4x² + 12x + 9 - 3(x² + x - 2) ← distribute

= 4x² + 12x + 9 - 3x² - 3x + 6 ← collect like terms

= x² + 9x + 15

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