Find the Squares of the Following: 3p - 4q2

Find the squares of the following:
3p - 4q²

बेरीज

(3p - 4q)²
= (3p)² - 2(3p)(4q) + (4q)²
= 9p² - 24pq + 16q².

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पाठ 3: Expansions - Exercise 4.1

पाठ 3 Expansions
Exercise 4.1 | Q 3.2

Expand the following, using suitable identity:

(–2x + 3y + 2z)²

Simplify of the following:

(x+3)³ + (x−3)³

Find the following product:

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

Find the following product:

(3x − 4y + 5z) (9x² +16y²+ 25z² + 12xy −15zx + 20yz)

If a - b = 7 and ab = 18; find a + b.

Evaluate: (5xy − 7) (7xy + 9)

Find the squares of the following:

`(7x)/(9y) - (9y)/(7x)`

Simplify:
(3x + 5y + 2z)(3x - 5y + 2z)

If `49x^2 - b = (7x + 1/2)(7x - 1/2)`, then the value of b is ______.

Multiply x² + 4y² + z² + 2xy + xz – 2yz by (–z + x – 2y).