Factorize. (i) 2mn +m^2-6n - 3m (ii) 4y^2 -81 (iii) t^2 - 6t+8

(i) (m-3)(2n+m) (ii) (2y+9)(2y-9) (iii) (t-4)(t-2)

Step-by-step explanation:

2mn+m^2-6n-3m

m(2n+m)-3(2n+m)

(m-3)(2n+m)

(m-3)(2n+m)

4y^2-81

(2y+9)(2y-9)

(2y+9)(2y-9)

t^2-6t+8

(t-4)(t-2)

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.