EVALUATE THE FOLLOWING ALGEBRAIC EXPRESSION. WRITE YOUR COMPLETE SOLUTION
18. 2x + 8, when x = 3
19. 4x + 5, when x = -4
20. x² - y2, when x = 2 and y = -5
21. - 10, when x= 1
22. a' + 9a²b + 27 b, when a = 1 and b = -1
18. 2x + 8, when x = 3
19. 4x + 5, when x = -4
20. x² - y2, when x = 2 and y = -5
21. - 10, when x= 1
22. a' + 9a²b + 27 b, when a = 1 and b = -1
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Answer:
18. 2(3)+8
6+8
= 14
19. 4(-4)+5
-15+5
= -10
20. (2)² - (-5)2
4 -(-10)
=14
21. (1)-10
=9
22. (1)+9(1)(-1)+27(-1)
10+26
= 36
Step-by-step explanation:
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