13. 9x^2-36x+36
14. 4x^2+14x+20
Remember area formula for a square is Length times Width.
The area formula for a triangle is 1/2base times height.
Sorry dwar i am expert in biology this math is beyond my brain capacities
3x^2 − 6x + 2 - (<span>5x − 6)
= </span>3x^2 − 6x + 2 - 5x + 6
= 3x^2 - 11x + 8
hope it helps
For every hour they studied their grade will go up by 9.6 points
