# Find the Following Product: (2x2 − 3) (2x2 + 5) - Mathematics

Find the following product:  (2x2 − 3) (2x2 + 5)

#### Solution

Here, we will use the identity​ $\left( x - a \right)\left( x + b \right) = x^2 + \left( b - a \right)x - ab$.

$\left( 2 x^2 - 3 \right)\left( 2 x^2 + 5 \right)$

$= \left( 2 x^2 \right)^2 + \left( 5 - 3 \right)\left( 2 x^2 \right) - 3 \times 5$

$= 4 x^4 + 4 x^2 - 15$

Is there an error in this question or solution?

#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 6 Algebraic Expressions and Identities
Exercise 6.7 | Q 1.08 | Page 47