Question

3
11) a
Find the values of the following:
i) 3x - 5 when x = 3
iii) 2x³- 5x² + 6x - 2 when x = 2
v) 3x - 2y when x =1/2 and y=1/4
ii) 4x²+ 3x - 6 when x = -1
iv) 5x + 3y when x = 2 and y = 3
and y =3​

Answer 1

Answer:

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Step-by-step explanation:

1. 3(3)+5 = 9+5 => 14
2. 2(2)³- 5(2)² + 6(2) - 2 => 2(8) - 5(4) + 12 - 2 => 16-20+12-2 => 4
3. 3(1/2) - 2(1/4) => 3/2 - 1/2 => 2/2 = 1
4. 4(-1)²+ 3(1) - 6 => 4(1) + 3 - 6 => 4+3-6 => 1
5. 5(2) + 3(3) => 10+9 => 19