Question

Plz Slove this two question ​

Answer 1

Answer:

9. 77x+3

10. 4x^3 + 2x^2 + 18x - 4

11. 5a^3 + 11a^2 + 8a

12. 3x^2 -16x -2y+6

Step-by-step explanation:

9. 86-[15x-7(6x-9)-2{10x-5(2-3x)}]

86-[15x-42x+63-2{10x-10+15x}]

86-[-27x+63-20x+20-30x]

86-[-77x+83

86+77x-83

77x+3

10. 12x-[3x^3 + 5x^2 - { 7x^2 - (4-3x-x^3)+6x^3} -3x

12x-[3x^3 +5x^2 - { 7x^2 - 4+3x+x^3 +6x^3 } - 3x

12x-[3x^3 +5x^2 -7x^2 +4-3x-x^3 -6x^3 -3x

12x-[-4x^3 -2x^2 -6x+4]

12x+4x^3 +2x^2 + 6x-4

4x^3 +2x^2 +18x-4

11. 5a-[a^2 - { 2a(1-a+4a^2)-3a(a^2 -5a-3)}] - 8a

5a-[a^2 - {2a^2 +8a^3 -3a^3 +15a^2 +9a}] -8a

5a-[a^2 - { 11a +13a^2 +5a^3}] -8a

5a-[a^2 -11a-13a^2 +5a^3 ] -8a

5a-[-11a^2 -11a -5a^3] -8a

5a+11a^2 +11a+5a^3 -8a

5a^3 +11a^2 +8a

12. 3-[x- { 2y-(15x+y-3)+2x^2} - (x^2 -3y)]

3-[x- {2y-15x-y+3+2x^2} - x^2 +3y]

3-[x- {-15x+y+3+2x^2} -x^2 +3y]

3-[x+15x-y-3-2x^2 - x^2 +3y]

3-[16x+2y-3x^2 -3]

3-16x-2y+3x^2 +3

3x^2 -16x -2y+6

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