How to do 4 x 4 x 4 using an exponent

4^3

Step-by-step explanation:

4×4×4

Multiply 4 and 4 to get 16.

16×4

Multiply 16 and 4 to get 64.

64=4^3

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15