VjMegawoodice VjMegawoodice

02-09-2016
Mathematics

contestada

Factorise completely: 9x2 + 42x + 49

Respuesta :

HomertheGenius HomertheGenius

11-09-2016

This is a perfect square trinomial:
9 x² + 42 x + 49 = ( 3 x )² + 2 · 3 x · 7 + 7² =
= ( 3 x + 7 )² = ( 3 x + 7 ) · ( 3 x + 7 )

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leviroeck leviroeck

03-03-2020

Answer:

i think the answer is (3x + 7)(3x + 7)

Step-by-step explanation:

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