Question

desenvolva a)(5x+7)²
b) (5x-7)²
c) (5x+7)(5x-7)
d) (3a-4)²
me ajudem por favor

Answer 1

a)$25^{2}$  + 70 x + 49

b)$25^{2}$ −70 x + 49

c)$25^{2}$− 49

d)$9a^{2}$ − 24 a + 16