X+y=120
x-y=40
x=40+y
40+y+y=120
2y=80
y=40
x=80
The correct options are B and C.
<span>49x^2+28x+4
= (7x + 2)^2
= (7x + 2)(7x + 2)</span>
Well because 14 is nowhere near half of 950 (which is 475), 1/2 is bigger. I hope this helped.
Numbers that can be solutions to this equation could be x = -4 or x = -5