Question

subtract (-3x power 2 +6x +3) from 5x power 2 -9​

Answer 1

hope this may help you dear

Answer 2

Answer:

Given⤵

➡-3x²+6x+3 and 5x²-9

To find ⤵

➡Subtraction -3x²+6x+3 from 5x²-9

Solution⤵

➡5x²-9-(-3x²+6x+3)

⚫If '-'sign is before the bracket then on breaking bracket inside bracket sign changed.

➡5x²-9+3x²-6x-3

➡5x²+3x²-6x-9-3

➡8x²-6x-12 or 4x²-3x-6

✅Hence, the value of subtracting -3x²+6x+3 from 5x²-9 is 8x²-6x-12 or 4x²-3x-6.

✔Extra points⤵

✡If '-'sign is before the bracket then on breaking bracket inside bracket sign changed. As -(-a) = a and -(a) = -a.

Hope this is helpful to you!