91影视

Tommy factored $x^2-x-20$as $(x+5)(x鈭�4).$Sara factored it as $(x+4)(x鈭�5).$Ernesto factored it as $(x鈭�5)(x鈭�4).$Who is correct? Explain why the other two are wrong.

List, in order, all the steps you take when using the 鈥渁c鈥� method to factor a trinomial of the form$a{x}^2+bx+c.$

How is the 鈥渁c鈥� method similar to the 鈥渦ndo FOIL鈥� method? How is it different?

Factor $16y^2+24y+9$completely using the perfect square trinomials pattern.

In the following exercises, factor the greatest common factor from each polynomial.

$10q^2+14q+20$

Factor $25v^2+20v+4$completely using the perfect square trinomials pattern.

In the following exercises, factor completely using the perfect square trinomials pattern.

$36s^2+84s+49$

In the following exercises, factor completely using the perfect square trinomials pattern.

$49s^2+154s+121$

In the following exercises, factor completely using the perfect square trinomials pattern.

$100x^2-20x+1$

In the following exercises, factor completely using the perfect square trinomials pattern.

$64z^2-16z+1$