Question

cuanto es
${b}^{2} + 7b + 12$
ayuda plisss​

Answer 1

$b {}^{2} + 7b + 12 = \\ b {}^{2} + 4b + 3b + 12 = \\ b \times (b + 4) + 3(b + 4)$

= (b + 4) × (b + 3)