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Question
Simplify 3x (4x −5) + 3 and find its values for x = `1/2.`
Sum
Solution
3x (4x −5) + 3
`12x^2 - 15x + 3`
For `x = 1/2`,
= `12(1/2)^2 - 15(1/2) + 3`
=`12 xx 1/4 - 15/2 + 3`
= `3 - 15/2 + 3`
= `6 - 15/2`
= `(12 - 15)/2`
= `(-3)/2`
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Simplify 3x (4x − 5) + 3 and find its values for x = 3.
a (a2 + a + 1) + 5 and find its values for
- a = 0,
- a = 1,
- a = − 1.
