Find the Squares of the Following: 9m - 2n

Find the squares of the following:
9m - 2n

बेरीज

Using (x + y)²
= x² + 2xy + y², we get
(9m - 2n)²
= (9m)² + 2(9m)(-2n) + (-2n)²
= 81m²- 36mn + 4n².

shaalaa.com

या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?

पाठ 4: Expansions - Exercise 4.1

पाठ 4 Expansions
Exercise 4.1 | Q 3.1

Evaluate the following using identities:

117 x 83

If 2x + 3y = 8 and xy = 2 find the value of `4x^2 + 9y^2`

Write in the expanded form:

(2a - 3b - c)²

If 3x − 2y = 11 and xy = 12, find the value of 27x³ − 8y³

If a + b = 10 and ab = 16, find the value of a² − ab + b² and a² + ab + b²

Find the following product:

(4x − 3y + 2z) (16x² + 9y² + 4z² + 12xy + 6yz − 8zx)

Evaluate: `(3"x"+1/2)(2"x"+1/3)`

Expand the following:
(3x + 4) (2x - 1)

Expand the following:
(x - 3y - 2z)²

If `"a"^2 - 7"a" + 1` = 0 and a = ≠ 0, find :

`"a" + (1)/"a"`