Pls help. The answer needs to have 3x^2 in front I’m sure with another answer as well. I asked a different question like this but got it wrong because they only gave me half of the answer.

9x^2+21x

Step-by-step explanation:

Area formula for a rectangle: L · W

L=3x

W=3x+7

Since it says multiplying polynomials

I'm guessing you do the Box method

3x(3x+7) = 9x^2+21x

Hope this helps! :)

Correct me if I'm wrong

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point