Find the Square of : 3a + 7b

Find the square of : 3a + 7b

बेरीज

We know that
( a + b )² = a² + b² + 2ab
( 3a + 7b )² = 9a² + 49b² + 2 x 3a x 7b
= 9a² + 49b² + 42ab

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पाठ 4: Expansions - Exercise 4 (A) [पृष्ठ ५७]

पाठ 4 Expansions
Exercise 4 (A) | Q 1.2 | पृष्ठ ५७

Simplify the following products:

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

Find the following product:

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

If \[x^2 + \frac{1}{x^2} = 102\], then \[x - \frac{1}{x}\] =

Find the square of 2a + b.

If 3x + 4y = 16 and xy = 4, find the value of 9x² + 16y².

Use the direct method to evaluate the following products:

(a – 8) (a + 2)

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

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

Expand the following:

(–x + 2y – 3z)²