Question

find the value of k if (-2)k+¹ × (-2)³ = (-2)⁷​

Answer 1

Step-by-step explanation:

k + 1 + 3 = 7 (if 2 is raised to k + 1)

k = 3

Answer 2

Answer:

(-2)k + 1×(-2)³ = (-2)⁷

-2k + (-8) = (-128)

-2k - 8 = -128

-2k = -128 + 8

-2k = -120

k = -120/-2

k = 60