Question

please help me understand how to solve this and these types of problems.
15 times the square of a non-zero number is equal to 15 times the number what is the number

Answer 1

First, you have to know how to translate what you're being told to math language (algebra) and that will be, "15 times the square of a non-zero number" means 15x^2 for x not being 0. "is equal to 15 times the number" means it's an equation and the right side have 15 times x, so
\[15*x^2=15*x\], x different from zero, so divide 15 and you'll have?

Answer 2

3 cuz i divided 15 by 5

Answer 3

why would you divide 15 by 5?

Answer 4

cuz 3 and 5 are the only ones 15 can go in to evenly

Answer 5

but look at your equation, you have
15x^2=15x
then to eliminate constant, you must divide by...

Answer 6

2

Answer 7

okay, no
you've
\[15x^2=15x\] then divide by 15
\[(15/15) x^2=(15/15) x\]
then, like (15/15)=1
\[x^2=x\]
and the only number that is equal to his square is...

Answer 8

1

Answer 9

correct, did you understand the proccess?

Answer 10

yes