Evaluate the following.
$- 3 a b c - 3$ for $a = 1$ , $b = 2$ and $c = 3$

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Solution

Finding the value of the algebraic expression
Substituting $a = 1$ , $b = 2$ and $c = 3$ in the expression we get,
$- 3 a b c - 3 = - 3 (1) (2) (3) - 3 = - 18 - 3 = - 21$
Hence, the value of the algebraic expression $a = 1$ , $b = 2$ and $c = 3$ is $- 21$

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Similar questions

If $a = 4$ , $b = 0$ and $c = - 1$ , find the value of the following :

$a^{3} + b^{3} + c^{3} - 3 a b c$

\frac{a^{3} + b^{3} + c^{3} - 3 a b c}{a^{2} + b^{2} + c^{2} - a b - b c - c a}

E v a l u a t e : 4 x - {3 y}^{2} - 5 x y, f o r x = - 1 a n d y = 3.

a = 2, b = 3

c = - 2

a^{2} + b^{2} + c^{2} - 2 a b + 3 a b c .

f (x) \begin{matrix} = 2, f o r x < 1 = a x + b, f o r 1 \leq x < 3 = 3, f o r x \geq 3 \end{matrix}

x = 1

x = 3

a

b

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