Question

(-3x^2)(4x^7) And explain why please. So i know I have to add the exponents and multiply the coefficients. But when you multiply 2 x's they become squared right?

Answer 1

-12x^9?

Answer 2

If you had 2 x's multiplied together it would be x squared. But you already have an x squared (2 x's) if you multiply those two by 7 more, you'll have 9 x's multiplied together (x^9)

Answer 3

Ohh tyvm!

Answer 4

Then it's just a matter of multiplying the non-variable part (-3)(4) = -12

Answer 5

Ohhh thanks!

Answer 6

you can think of it as if the x is x^1 then if you've got x*x it's like you have x^1*x^1 there for what you get is x^2

Answer 7

When you multiply 2 \(x\)s together, you're adding the exponents just like normal. The variable \(x\) is the same as \(x^1\). So when you multiply \(x\) by \(x\), you're really multiplying \(x^1\) by \(x^1\). When you add the exponents, you get \(x^2\).