What’s (5x + 3y) squared, and how’d you do it?

The answer is 25x^2 + 30xy + 9y^2

Step-by-step explanation:

There is a formula that can easily help you solve this:

(a + b)^2 = a^2 + 2ab + b^2

In this problem, a is 5x and b is 3y.

So, (5x)^2 + 2 (5x)(3y) + (3y)^2

(5x)^2 is equal to (5x)(5x), which is equal to 25x^2.

2 times 5x is 10x, and 10x times 3y is 30xy.

(3y)^2 is equal to (3y)(3y), which is equal to 9y^2.

Thus, your answer is 25x^2 + 30xy + 9y^2

4 + 5 7/9= 9 7/9

step-by-step explanation:

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.