Question

Add and find the degree of the following expressions.

(k² – 25k + 46) and (23 – 2k² + 21k)

Answer 1

(k² – 25k + 46) and (23 – 2k² + 21k)

This can be written as (k² – 25k + 46) + (23 – 2k² + 21k)

Grouping the like terms, we get

(k² – 2k²) + (– 25k + 21k) + (46 + 23)

= k²(1 – 2) + k(– 25 + 21) + 69

= –1k² – 4k + 69

Thus degree of the expression is 2.