Question

a.
3abc + bac - 2a-bc
0.
5. Simplify and find the value of the algebraic expression for x = 4, y = 2 and z = -1
a. 2x + 3y + 5
b. 3(x-9) + 5
C. 2y + 6(3-5) - 15
d. 862-1) + 2(5 - z) -8​

Answer 1

Answer:

a. 19

b. -20

c. 31

d. 865

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Answer 2

que 5 - 19

according to question x= 4,y= 2 and z= -1

So, 2x+3y+5

(2×4)+(3×3)+5

8+9+5

so, the answer is 19.

So, 3(x-9) +5

3(4-9) +5

3×4-3×9+5

So, answer is -10

So, 2y+6(3-5) -15

2×2+6×3-6×5-15

4+18-30-15

22-45

so,the answer is -23.

So, (862-1) +2(5-z) -8

861+2(5-(-1)) -8

861+2×5-2×-1 -8

861+10+4 - 8

so, the answer is 867