Simplify by Using Formula : (2x + 3y) (2x - 3y) - Mathematics

Simplify by using formula :
(2x + 3y) (2x - 3y)

बेरीज

(2x + 3y) (2x - 3y)
= (2x)² - (3y)²
= 4x² - 9y²
(Using identity : (a + b) (a - b) = a² - b²).

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पाठ 4: Expansions - Exercise 4.1

पाठ 4 Expansions
Exercise 4.1 | Q 4.2

Factorise the following using appropriate identity:

4y² – 4y + 1

Verify:

x³ + y³ = (x + y) (x² – xy + y²)

Simplify the following:

0.76 x 0.76 - 2 x 0.76 x 0.24 x 0.24 + 0.24

Simplify the following products:

`(1/2a - 3b)(1/2a + 3b)(1/4a^2 + 9b^2)`

Write in the expanded form: (-2x + 3y + 2z)²

Evaluate of the following:

111³ − 89³

If \[\frac{a}{b} + \frac{b}{a} = 1\] then a³ + b³ =

Evaluate: (1.6x + 0.7y) (1.6x − 0.7y)

If `"a"^2 + (1)/"a"^2 = 14`; find the value of `"a" + (1)/"a"`

Simplify:
(1 + x)(1 - x)(1 - x + x²)(1 + x + x²)