ACTIVITY 1:
Evaluate the following algebraic expressions. Write your answer inside the box.
1. a + b – 8 when a = 2 and b = -6 ……
2. 4x – 3y when x = -1 and y = 2 ……
3. 2m2 – 3n – 5 when m = 3 and n = -1 ……
4. 4r + qr – 10 when r = -3 and q = 0 ……
5. 2xy – 3y3 when x = -2 and y = 2 ……
Evaluate the following algebraic expressions. Write your answer inside the box.
1. a + b – 8 when a = 2 and b = -6 ……
2. 4x – 3y when x = -1 and y = 2 ……
3. 2m2 – 3n – 5 when m = 3 and n = -1 ……
4. 4r + qr – 10 when r = -3 and q = 0 ……
5. 2xy – 3y3 when x = -2 and y = 2 ……
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Answer:
1. 2+(-6) - 8
2 - 6 - 8
= -12
2. 4(-1) - 3(2)
- 4 - 6
= -10
3. 2(3)2 - 3(-1) - 5
12 + 3 - 5
= 10
4. 4(-3) + (0)(-3) - 10
- 12 + (-) - 10
- 12 - (-10)
- 12 +10
= -2
5. 2(-2)(2) - 3(2)3
- 8 - 18
= -26