#1**0 **

It appears to me that several values for x would work in number 1. I don't know how to solve it. Sorry.

*2. Factor fully by grouping: 5x ^{2} + 15x +4x + 12*

I'm not sure what "by grouping" means, but I can factor the quadratic for you.

First add 15x and 4x 5x^{2} + 19x + 12

This will factor to (5x + 4)(x + 3)

_{.}

Guest Jul 8, 2020

#2

#3**+1 **

I think we need the dimensions of the pool ....or the value of 'x' to calculate this

without these , the answer I get is

area = 16x^2+8x

ElectricPavlov Jul 8, 2020