Answer is B
= (-2x^2 - 2x + 1) - (x + 1)
= -2x^2 - 2x + 1 - x - 1
= -2x^2 -3x
Right triangle 45 45 90
so b = 2√2
and
a^2 = (2√2)^2 + (2√2)^2
a^2 = 8 + 8
a^2 = 16
a = 4
25 would be your final answer.
The answer to the question is B.
Set up a proportion: x/y = x/y
(.75)/(15) = (x)/(25)
Then cross multiply:
(.75)(25) = (15)(x)
18.75 = 15x
x = 1.25 or (5/4)
There you go :)
