Question

PRA AGORA LETRA F ,G E H PLZ

Answer 1

f)
$\frac{3a-4}{a^2-16}$ - $\frac{1(a+4)}{a^2 - 16}$
3a -4 -(a + 4)
3a - 4 -a -4
= 2a -8

g)
$\frac{4x^2}{1-x^2} - \frac{(1-x)(1-x)}{(1+x)(1-x)} + \frac{(1+x)(1+x)}{(1-x)(1+x)}$
4x² - (1 -2x + x²) + 1 + 2x + x² 
4x² - 1 + 2x - x²) + 1 + 2x + x² 
= 4x² + 4x

h)
$\frac{a(a+b)}{(a-b)(a+b)} - \frac{a^2}{a^2-b^2}$
a² + ba - a²
= ba