Chapter 8.4, Problem 23MCQ

To determine

The solution of the given expression.

Answer to Problem 23MCQ

The solution of the product $\left(7h-2\right)\left(7h+2\right)$ is $49h^2-4$

Explanation of Solution

Given information:

The product $\left(7h-2\right)\left(7h+2\right)$

Concept and Formula Used:

The property $\left(a-b\right)\left(a+b\right)=a^2-b^2$

Calculation:

The givenproduct is $\left(7h-2\right)\left(7h+2\right)$

Using the property $\left(a-b\right)\left(a+b\right)=a^2-b^2$

Therefore

  $\begin{array}{l}\left(7h-2\right)\left(7h+2\right)={\left(7h\right)}^2-{\left(2\right)}^2\\ \left(7h-2\right)\left(7h+2\right)=49h^2-4\end{array}$

Conclusion:

The solution of the product $\left(7h-2\right)\left(7h+2\right)$ is $49h^2-4$