Multiply.
-$\left( 5 x ^ { 2 } - 7 \right) ^ { 2 }$
A) $25 x ^ { 4 } + 49$ 49
B) $25 x ^ { 4 } - 70 x ^ { 2 } + 49$
C) $5 x ^ { 4 } + 49$
D) $5 x ^ { 4 } - 70 x ^ { 2 } + 49$

Question

Quizplus · Accepted Answer

To square the binomial $(5x^2 - 7)^2$, apply the formula $(a - b)^2 = a^2 - 2ab + b^2$, where $a = 5x^2$ and $b = 7$. Squaring each term and multiplying gives $25x^4 - 2(5x^2)(7) + 49$, simplifying to $25x^4 - 70x^2 + 49$.

Multiply - (5x2−7)2\left( 5 x ^ { 2 } - 7 \right) ^ { 2 }(5x2−7)2

Multiply
- $\left( 5 x ^ { 2 } - 7 \right) ^ { 2 }$