Question

$factorization of 3x^{2} +17x+20$

Answer 1

Heya folk !!

Here's the answer you are looking for

3x² + 17x + 20

= 3x² + (12 + 5)x + 20

= 3x² + 12x + 5x + 20

= 3x(x + 4) + 5(x + 4)

= (x + 4)(3x + 5)


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Answer 2

$3x^{2} + 17x + 20 \\ 3 {x }^{2} + 12x + 5x + 20 \\ 3x(x + 4) + 5(x + 4) \\ (3x + 5)(x + 4) \\ x = -5 \div 3 \\ x = - 4$