Identify the factors of this trinomial 4x²-19x+21

asked Apr 1, 2023 14.2k views

16 votes

Identify the factors of this trinomial
4x²-19x+21

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1 vote

Answer:

(4x-7) (x-3)

Explanation:

$4x {2} - 19x + 21 \\ = 4x {2} - 7x - 12x + 21 \\ = x(4x - 7) - 3(4x - 7) \\ = (4x - 7)(x - 3)$

RCN answered Apr 3, 2023

by RCN

3.1k points

1 vote

$4x^2-19x+21\\\\=4x^2-7x-12x+21\\\\=x(4x-7)-3(4x-7)\\\\=(x-3)(4x-7)$

Keugels answered Apr 5, 2023

3.9k points

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