Question

help!
5x^2(x-3+y)
can u please show your steps?

Answer 1

simplify ?

Answer 2

yeah

Answer 3

help anyone?

Answer 4

Yes. The key to solving this problem is to know and apply correctly "Order of Operations" rules. Anything inside parentheses has to be done first (if applicable). Exponentiation takes place next. Third and fourth are 3) multiplication and division, and 4) addition and subtraction.

Since nothing within your parentheses can actually be operated on / simplified), focus on the (5x^2) which is a multiplier of that (x-3+y). Multiply each of the three terms within parentheses by (5x^2). You'll end up with three terms, each of which has (5x^2) in it.

There's one more step to solving this problem. But for now, please do the multiplication I've recommended here.

Answer 5

Example: (5x^2)(-3) = -15x^2. You can't simplify that further.
But what about multiplying (5x^2)(x)? what's the result? Can it be simplified or not?

Answer 6

so 5x^3 is one of them right?

Answer 7

5x^3-15x^2+5x^2y? @mathmale

Answer 8

Yes! Nice work! Personally, I would have left 5x^2(x-3+y) as it were, unless asked to multiply and simplify, since 5x^2(x-3+y) is shorter and easier to read than is 5x^3-15x^2+5x^2y.

Going on to another problem now? Best wishes to you.
Note that I'm getting off the 'Net now. Work with you again soon, I hope!

Answer 9

thats the final answer? @mathmale

Answer 10

Is 5x^3-15x^2+5x^2y the final answer? That depends on what the instructions said. Please go back and look up those instructions.

If you're supposed to "expand and simplify your answer," then 5x^3-15x^2+5x^2y is correct.