Question

n³-2=25 4×5=16×4

√×-2=4

5×x²+10=30

Answer 1

n³ - 2 = 25
n³ = 25 + 2
n³ = 27
n = ³√27
n = 3

√x - 2 = 4
√x = 4 + 2
√x = 6
x = 6²
x = 36

5.x² + 10 = 30
5x² = 30 - 10
5x² = 20
x² = 20/5
x² = 4
x = √4
x = 2