Find the value of expression -a - b- -a-2 - ab-when a - 3 and b - 2-15-54-16-20-

The correct option is A 15 Substituting values of a = 3 and b = 2 in the expression: ⇒ (3 2) (3^2 + (3 × 2)) ⇒ (3 2) (9 + 6) ⇒ (1) (15) = 15 The value of ...

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Byju's Answer

Standard VII

Mathematics

Multiplication of a Binomial by a Binomial

Find the valu...

Question

Find the value of expression $(a - b) (a^{2} + a b)$ when a = 3 and b = 2?

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Solution

The correct option is A
15

Substituting values of a = 3 and b = 2 in the expression:

$\Rightarrow (3 - 2) (3^{2} + (3 \times 2))$

$\Rightarrow (3 - 2) (9 + 6)$

$\Rightarrow (1) (15) = 15$

The value of the expression is 15.

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Find the value of expression (a−b)(a2+ab) when a = 3 and b = 2?

The correct option is A 15 Substituting values of a = 3 and b = 2 in the expression: ⇒(3−2)(32+(3×2)) ⇒(3−2)(9+6) ⇒(1)(15)=15 The value of the expression is 15.

Find the value of expression $(a - b) (a^{2} + a b)$ when a = 3 and b = 2?

The correct option is A
15

Substituting values of a = 3 and b = 2 in the expression:

$\Rightarrow (3 - 2) (3^{2} + (3 \times 2))$

$\Rightarrow (3 - 2) (9 + 6)$

$\Rightarrow (1) (15) = 15$

The value of the expression is 15.