Question

find the product using suitable identity (a) (2a+3)(2a-3)​

Answer 1

Answer:

By Using Identity - (a+b) (a-b) = a²-b²

==> (2a+3) (2a-3) = (2a)²-(3)²

==> 4a²-9

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Answer 2

(2a + 3) (2a - 3) = 4a² - 9

Given :

The expression (2a + 3) (2a - 3)

To find :

The value of the expression

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is (2a + 3) (2a - 3)

Step 2 of 2 :

Simplify the given expression

We use the formula a² - b² = ( a + b ) ( a - b )

$\sf (2a + 3) (2a - 3)$

$\sf = {(2a)}^{2} - {(3)}^{2}$

$\sf = 4 {a}^{2} - 9$

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