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

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

बेरीज

(3x + 4) (2x - 1)
= 6x²- 3x + 8x - 4
= 6x² + 5x - 4
(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 1.4

Expand the following, using suitable identity:

(2x – y + z)²

Evaluate of the following:

93³ − 107³

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

If a + b + c = 9 and ab +bc + ca = 26, find the value of a³ + b³+ c³ − 3abc

Evaluate: (2a + 0.5) (7a − 0.3)

Simplify by using formula :
(5x - 9) (5x + 9)

If x + y = 9, xy = 20
find: x² - y².

If a² + b² + c² = 41 and a + b + c = 9; find ab + bc + ca.

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

Prove that (a + b + c)³ – a³ – b³– c³ = 3(a + b)(b + c)(c + a).