6 + 2(x - 5) = -40 - 5(x - 3)
6 + 2x - 10 = -40 - 5x + 15
-4 + 2x = -25 - 5x
2x = -21 - 5x
7x = -21
x = -3
Hello,
y=(x-2)²-15
y=5x-1
==> 5x-1=x²-4x+4-15
==> x²-9x-10=0
Δ=9²+4*10=11²
x=(9+11)/2 or x=(9-11)/2
==>(x=10 and y=5*10-1=49) or (x=-1 and y=5*(-1)-1=-6)
1) A (-1,-6)
2) C (10,49)
The 2nd option is correct ! Hope this helped
Answer:
-12x+24
Step-by-step explanation:
3(-4x+8)
multiply 3 by each part so 3(-4x) + 3(8)
-12x+24
