## anonymous 5 years ago Could you show me how to reduce these algebraic fractions and then multiply?

1. anonymous

$2a ^{2}-7a - 15 \over 3a ^{2} - 8a -3$ times $9a ^{2} - 1 \over 4a ^{2} - 9$ times $2a ^{2} - 9a + 9 \over a ^{2} + 3a -10$

2. anonymous

(2a ^{2}-7a-15)/(3a ^{2}-8a-3) =(2a+3)(a-5) /(3a+1)(a-3)

3. anonymous

(9a^2-1)/(4a^2-9)= (3a+1)(3a-1)/(2a+3)(2a-3)

4. anonymous

outcastlilgurl, factorise the numerator and the denominator for those three fractions, then you try to cancel any similar factors