What is the standard form of y= (x-6)(x-4)(x-1)y=(x−6)(x−4)(x−1)?
1 Answer
Explanation:
To rewrite the equation in standard form, start by expanding the first two brackets:
y=(color(red)xy=(x color(green)(-6))(color(orange)x−6)(x color(blue)(-4))(x-1)−4)(x−1)
y=(color(red)x(color(orange)x)y=(x(x) color(red)(+x)(color(blue)(-4))+x(−4) color(orange)(+x)(color(green)(-6))+x(−6) color(green)(-6)(color(blue)(-4)))(x-1)−6(−4))(x−1)
Simplify.
y=(x^2-4x-6x+24)(x-1)y=(x2−4x−6x+24)(x−1)
y=(x^2-10x+24)(x-1)y=(x2−10x+24)(x−1)
Expand the remaining two brackets:
y=(color(red)(x^2)y=(x2 color(orange)(-10x)−10x color(blue)(+24))(color(green)x+24)(x color(purple)(-1))−1)
y=color(red)(x^2)(color(green)x)y=x2(x) color(red)(+x^2)(color(purple)(-1))+x2(−1) color(orange)(-10x)(color(green)x)−10x(x) color(orange)(-10x)(color(purple)(-1))−10x(−1) color(blue)(+24)(color(green)x)+24(x) color(blue)(+24)(color(purple)(-1))+24(−1)
Simplify.
y=x^3-x^2-10x^2+10x+24x-24y=x3−x2−10x2+10x+24x−24
y=x^3-11x^2+34x-24y=x3−11x2+34x−24