Question

calcule o valor numérico das explessoes
a)5²a+3ab,para a=-3e b=4
b)x⁶-m⁴,para x=-1 e m =-2​

Answer 1

a)

$5^{2}$.a + 3.a.b

a = -3

b = 4

$5^{2}$. (-3) + 3 . (-3 ) . 4

25 . (-3) - 9 . 4

- 75 - 36

- 111

b)

$x^{6}$ - $m^{4}$

x = - 1

m = - 2

$(-1)^{6}$ - $(-2)^{4}$

1 - 16

- 15