Answer:
x=139
Step-by-step explanation:
angles on a straight line add up to 180 degrees
Answer:
I think its step 2.
Step-by-step explanation: Correct me if im wrong. Hope it helps. :)
Its 3,167 hope this helped
Answer:
4x^2 + 4x + 1=9
4x^2 + 4x - 8=0
Dividing both sides by 4
x^2 + x -2=0
It can be written as
x^2 + 2x - x - 2=0
x(x+2) -1(x+2)=0
taking (x+2) as common on LHS
Then, (x+2)(x-1)=0
Now first equate x+2=0 ie x=-2
then x-1=0 ie x=1
Therefore, x has two values(roots)
that is -2,1
