Question

Hey i need help with this question, can you help?

Answer 1

Answer:

12x²-2/14x²-9

Step-by-step explanation:

Since the denominators are the same you can ignore them.

9x²+3- (-3x²)+5

Simplyfies to 12x²-2

Answer 2

$\bold{\text{Answer:}\quad \dfrac{2(6x^2-1)}{14x^2-9}}$

Step-by-step explanation:

$.\quad \dfrac{9x^2+3}{14x^2-9}-\dfrac{-3x^2+5}{14x^2-9}\\\\\\=\dfrac{9x^2+3}{14x^2-9}+\dfrac{-(-3x^2+5)}{14x^2-9}\\\\\\=\dfrac{9x^2+3}{14x^2-9}+\dfrac{3x^2-5}{14x^2-9}\\\\\\=\dfrac{9x^2+3+3x^2-5}{14x^2-9}\\\\\\=\dfrac{12x^2-2}{14x^2-9}\\\\\\=\large\boxed{\dfrac{2(6x^2-1)}{14x^2-9}}$