1.

Simplify these expressions and find their values ifx = 3, a = -1 and b= -2.(i) 3x - 5 - x +9 (ii) 10 - 3 - 4 - 5x(iii) 3a + 7a +5 - 1 (iv) 2x - 3 - 4 - 5+ a(v) a²x + b2x + 5​

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Step-by-step EXPLANATION:

(I)

3x-5-x+9

3(3)-5-3+9

9-5-3+9

18-8

10

(2)

10-3-4-5x

10-3-4-5(3)

10-3-4-15

10-22

-12

(3)

3(-1)+7(-1)+5-1

-3-7+5-1

-11+5

-6

(4)

2(3)-3-4-5+(-1)

6-3-4-5-1

6-13

-7

(5)

(-1) SQUARE(3)+(-2)2(3)+5

1(3)-2+6+5

3-2+6+5

14-2

12.


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