Question

please help me with this maths exponent sum with stem by stem explaination I neeh help please?​

Answer 1

subtract 3x³-5x²-9x+6 from 2x³+9x²-7x-8

2x³+9x²-7x-8

-(3x³-5x²-9x+6)

(-) (+) (+) (-)

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(it's subtraction so you need to change the signs of the numbers as the minus sign is put before the bracket, now the equation after changing the sign will be)

2x³+9x²-7x-8

-3x³+5x²+9x-6

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-x³+14x²+2x-14

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Answer 2

Answer:

(2x³ + 9x² - 7x - 8) - (3x³ - 5x² - 9x + 6)

= -x³ + 14x² + 2x - 14

Step-by-step explanation:

We have to find,

(2x³ + 9x² - 7x - 8) - (3x³ - 5x² - 9x + 6) = ?

Now,

(2x³ + 9x² - 7x - 8) - (3x³ - 5x² - 9x + 6)

Opening brackets we get,

2x³ + 9x² - 7x - 8 - 3x³ + 5x² + 9x - 6

= 2x³ - 3x³ + 9x² + 5x² - 7x + 9x - 8 - 6

= -x³ + 14x² + 2x - 14

Thus,

(2x³ + 9x² - 7x - 8) - (3x³ - 5x² - 9x + 6)

= -x³ + 14x² + 2x - 14

Hope it helped and you understood it........All the best