Find the values of a, b, and c for which the quadratic equation ax2 + bx + c = 0 has the given numbers as solutions. Then
use those values to write a quadratic equation.
-$$( x - 7 y ) ( x + 12 y )$$
A) $x + 5 x y - 84 y$
B) $x ^ { 2 } + 5 x y - 84 y ^ { 2 }$
C) $x ^ { 2 } + 2 x y - 84 y ^ { 2 }$
D) $x ^ { 2 } + 5 x y + 5 y ^ { 2 }$

Question

Quizplus · Accepted Answer

Expanding $(x - 7y)(x + 12y)$ gives $x^2 + 12xy - 7xy - 84y^2$, which simplifies to $x^2 + 5xy - 84y^2$.

Find the Values of A, B, and C for Which (x−7y)(x+12y)( x - 7 y ) ( x + 12 y )(x−7y)(x+12y)

Find the Values of A, B, and C for Which $( x - 7 y ) ( x + 12 y )$