Question

Solve:
if the product of the square is a positive number and 7 is 21, then what is the number?

Answer 1

product means multiply and is means "equals"....

7x^2 = 21, then solve

Answer 2

dont get it

Answer 3

first divide both sides by 7

Answer 4

ok so that is...3 and ...?

Answer 5

that gives you x^2 = 3. Then to solve, take the square root of both sides

Answer 6

x = 3 and -3, but the problem said it had to be a positive number, so 3 is the answer

Answer 7

ok thank you

Answer 8

you're welcome