Write the coefficients and terms of the algebraic expression $10 x^{2} - 5 x - 6$ . Also, find the value of the expression at $x = 2$ . [2 MARKS]

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Solution

Coefficients and terms: 0.5 Mark each
Value of the expression: 1 Mark

Coefficients of $x^{2}$ and $x$ are 10 and - 5 respectively

Terms are $10 x^{2}$ , $- 5 x$ and $- 6$
We have to find the value of the expression at $x = 2$ is
$10 \times 2 \times 2 - 5 \times 2 - 6$
= $40 - 10 - 6$
= $24$
Hence, the value of the expression at $x = 2 i s 24$

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