Question

Exercitiul 10,va rog frumos
Urgent

Answer 1

10.a) Folosind formula

${a}^{2} + 2ab + {b}^{2} = {(a + b)}^{2}$

scriem:

$e(x) = {(2x - 3 + 2x + 3)}^{2} = {(4x)}^{2}$

b)

$n = {(4x)}^{2} daca \: inlocuim \: x \: cu \: \frac{ \sqrt{2} }{2} obtinem \\ {(4 \times \frac{ \sqrt{2} }{2}) }^{2} = {(2 \sqrt{2} )}^{2} = 4 \times 2 = 8$