Question

Nick is solving the equation 3x^2=20-7x with the quadratic formula

which values could He use for a, b and c

Answer 1

C. a = 3

b = 7

c = -20

Explanation:

x = -b+/- (sq) b^2 - 4ac.

Well the way to plug the numbers in is by using this equation: Ax^2 + Bx + C = 0

S if you use your equation : 3x^2 = 20 - 7x

First you have to move everything to one side.

So it'll look like this:

3x^2 = 20 - 7x

-20 -20

3x^2 - 20 = -7x

+7x +7x

3x^2 - 20 + 7x = 0

don't forget that... Ax^2 +Bx+ C= 0

3 = A

7 = B

-20 = C