Question

ayudaaaaaaaaaaaa porfis es examen para hoy ​

Answer 1

Explicación paso a paso:

1.-

$4 {a}^{4} + 12 {a}^{2} b + 9 {b}^{2} = (2 {a}^{2} + 3b) ^{2}$

2.-

$\frac{2 {a}^{3} }{5} \times \frac{10}{ {a}^{3} } \\ = \frac{2}{5} \times 10 \\ = 2 \times 2 = 4$

$\frac{6 {a}^{2} {b}^{2} }{5} \div \frac{ab}{10} \\ = \frac{6 {a}^{2} {b}^{2} }{5} \times \frac{10}{ab} \\ = \frac{6ab}{5} \times 10 \\ = 6ab \times 2 = 12ab$

La 3 no estoy segura xd