Express each of the following vertex form into general form and intercept form.

a) f(x)=(x-2)²-1
b) f(x)=9-(2x-1)²
c) f(x)=2(x+1)²-18

a² + b²= c²

24² + 7² = c²

c= 25

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

the weight of the object inside the box!