Question

factotrise the following expression 2r²-9r-45​

Answer 1

$\huge{\mathfrak{\red{\boxed{\green{\underbrace{\overbrace{\blue{†Answer†}}}}}}}}$

2r²-9r-45

=> 2r²-(6r-15r)-45

=> 2r²-6r+15r-45

=> 2r(r-3)+15(r-3)

=> (r-3)(2r-15)

=> either x = 3 or 15/2

Please give me 10 thanks...........

Answer 2

Answer:

2r^2-9r-45

2r^2-15r-6r-45

2r^2-6r-15r-45

2r(r-3) +15(r-3)

(2r+15) (r-3)

Step-by-step explanation:

by middle term splitting method