Question

4. Factor the expression.
4b2 + 28b + 49
QA (2b + 7)2
OB (2b - 72
C (-2b + 7)2
OD 2(b - 7)2​

Answer 1

Answer:

A. $(2b+7)^2$

Step-by-step explanation:

$4b^2 +28b + 49\\=(2b)^2 + 2\times 2b\times 7 + (7)^2\\=(2b+7)^2$