# Find the Following Product: (X + 4) (X + 7) - Mathematics

Find the following product: (x + 4) (x + 7)

#### Solution

Here, we will use the identity

$\left( x + a \right)\left( x + b \right) = x^2 + \left( a + b \right)x + ab .$

$\left( x + 4 \right)\left( x + 7 \right)$

$= x^2 + \left( 4 + 7 \right)x + 4 \times 7$

$= x^2 + 11x + 28$

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#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 6 Algebraic Expressions and Identities
Exercise 6.7 | Q 1.01 | Page 47