Question

simplyfy and find the value.

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Answer 1

Answer:

Ok.!

A (-4) b 7 c (-9) d (-57).

Well,

(a)

• 5(-1)- 5- 7(-1)+ 3(-1)+ 2
• - 5- 5+ 7- 3+ 2
• -10+ 7- 3+ 2 = -4

(b)

• [2(-1)- 4(-1)(1)+ 9(-1)^2)]- [(-1)+ 2(-1)(1)-3]
• -2+ 4+ 9+ 1- 2- 3
• 11- 4 = 7

(c)

• [4(2)^2 (-1)- 9×2×0+ 14(0)^2]+ [- 2(2)^2 (-1)+ 2× 2× 0- (-1)^2
• - 16- 0+ 14 (0)+ 8- 1= -9

(d)

• 15- 3(-3 +3)+ 12 (-3 -3)
• 15+ 0- 72= -57.