Question

8. Simplify: (a) 2x(x - 5) + 3 and find its values for (i) x = -1 (ii) x 2​

Answer 1

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Answer 2

Answer:

$2x( x - 5) + 3 \\ = {2x}^{2} +3 \\ \\ so \: substituting \: x \: value \\ 2( { - 1}^{2} ) + 3 \\ \\ we \: know \: that - 1 \times - 1 = 1 \\ \\ = 2(1) + 3 \\ = 2 + 3 \\ = 5$[/tex]

Then x=2 answer be 10

Step-by-step explanation:

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