Simplify $- 4 x ( x - 7 ) + x ^ { 2 }$ by eliminating the parentheses and combining like terms.
A) $5 x ^ { 2 } + 28 x$
B) $- 3 x ^ { 2 } - 7 x$
C) $- 3 x ^ { 2 } + 28 x$
D) $5 x ^ { 2 } - 7 x$
E) $- 3 x ^ { 2 } + 28$

Question

Quizplus · Accepted Answer

Distributing the $ -4x $ gives us $-4x^2 + 28x + x^2$, which simplifies to $-3x^2 + 28x$. This matches choice C.

Simplify −4x(x−7)+x2- 4 x ( x - 7 ) + x ^ { 2 }−4x(x−7)+x2

Simplify $- 4 x ( x - 7 ) + x ^ { 2 }$