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Find the Following Product: (Z2 + 2) (Z2 − 3) - Mathematics

Answer in Brief

Find the following product: (z2 + 2) (z2 − 3)

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Solution

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

\[\left( z^2 + 2 \right)\left( z^2 - 3 \right)\]

\[ = \left( z^2 \right)^2 + \left( 2 - 3 \right)\left( z^2 \right) - 2 \times 3\]

\[ = z^4 - z^2 - 6\]

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APPEARS IN

RD Sharma Class 8 Maths
Chapter 6 Algebraic Expressions and Identities
Exercise 6.7 | Q 1.09 | Page 47
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