Question

Factorise the following polynomials p² +6p +8 , q²--10q+21 , 2t²-t-10

Answer 1

Answer:

p²+6p+8

=p²+2p+4p+8

=p(p+2)4(p+2)

=(p+4)(p+2)

q²-10q+21

q²-7q-3q+21

q(q-7)-3(q-7)

(q-3)(q-7)

2t²-t-10

2t²+4t-5t-10

2t(t+2)-5(t+2)

(2t-5)(t+2)