Expand the Following: (2x - 5) (2x + 5) (2x- 3)

Expand the following:
(2x - 5) (2x + 5) (2x- 3)

बेरीज

(2x - 5) (2x + 5) (2x- 3)
= (4x² - 25) (2x - 3)
= 8x³- 12x² - 50x + 75
(Using identity : (x - a) (x + b)
= x² - (a - b) x - ab).

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पाठ 4: Expansions - Exercise 4.1

पाठ 4 Expansions
Exercise 4.1 | Q 1.5

Use suitable identity to find the following product:

(x + 8) (x – 10)

Evaluate the following using identities:

(1.5x²− 0.3y²) (1.5x²+ 0.3y²)

Write in the expand form: `(2x - y + z)^2`

Evaluate of the following:

(103)³

Find the value of 27x³ + 8y³, if 3x + 2y = 14 and xy = 8

If x = 3 and y = − 1, find the values of the following using in identify:

\[\left( \frac{x}{y} - \frac{y}{3} \right) \frac{x^2}{16} + \frac{xy}{12} + \frac{y^2}{9}\]

If x + y = `7/2 "and xy" =5/2`; find: x - y and x² - y²

Use the direct method to evaluate the following products :
(3x – 2y) (2x + y)

Use the direct method to evaluate :
`(3/5"a"+1/2)(3/5"a"-1/2)`

Evaluate: (1.6x + 0.7y) (1.6x − 0.7y)