Math Quiz....?

1: 48-4x=2x(squared)

2: 26(squared)=y(squared)+(34-y)(squared)

3: (x-1)(cubed)=x(cubed)-91

Math Quiz....?

q1

48-4x=2x(squared)

x^2 + 2x - 24 = 0

(x+6)(x-4) = 0

x = -6, 4

q2

26(squared)=y(squared)+(34-y)(squared)

676 = y^2 + (y^2 - 68y + 1156)

y^2 - 34y + 240 = 0

(y-24)(y-10) = 0

y = 10, 24

q3

(x-1)(cubed)=x(cubed)-91

x^3 - 3x^2 + 3x - 1 = x^3 - 91

3x^2 - 3x - 90 = 0

3(x-6)(x+5) = 0

x = -5, 6

Math Quiz....?

1) 48-4x=2x

2

=2x +4x-48

2

2x +12x-8x-48

2

(2x +12x)-(8x+48)=2x(x+6)-8(x+6)

(2x-8)(x+6)