Question

Expand (m + 5) ( m_ 8) using algerbraic identify​

Answer 1

Answer:

We know that (x + a)(x + b) = x2 + (a + b)x + ab

by substituting this formula

(m + 5) ( m_ 8)

= m2 + (5 +(-8) ) m + 5×-8

m2 + (-3) m +(-40)

m2 -3m -40