Math, asked by zufeen1467, 1 month ago

1. 9x³-[4x²-{-3x³-(2-5x²)+6x}]
need help
2. 45-[6x-5(4x-3)-3{10x-2(5-2x)}]

Answers

Answered by chandan454380

4

Answer:

1 . 6x³ + x² + 6x - 2

2. 56x

Step-by-step explanation:

1. 9x³-[4x²-{-3x³-(2-5x²)+6x}]

9x³-[4x²-{-3x³-2 + 5x²+6x}]

9x³-[4x² + 3x³+ 2 - 5x²- 6x]

9x³-4x² - 3x³- 2 + 5x²+ 6x

9x³- 3x³-4x²+ 5x²+ 6x - 2

6x³ + x² + 6x - 2

2.45-[6x-5(4x-3)-3{10x-2(5-2x)}]

45 -[6x - 20x + 15 -3{10x - 10 + 4x}]

45 -[6x - 20x + 15 - 30x + 30 - 12x]

45 - 6x + 20x - 15 + 30x - 30 + 12x

45 - 15 - 30 - 6x + 20x + 30x + 12x

56x

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