Question

Find the value of (3m + n) (m-n + 1) when
(a) m = 5 and n = 3​

Answer 1

Step-by-step explanation:

(3m+n) (m-n+1)

(3×5+3) (5-3+1)

(15+3) (3)

(18)(3)

(54)

Answer 2

Answer:

54

m=5 n=3

(3×5+3) (5-3+1)=54