Question

angle ABC=90 degree, AB=9, BC=12, AC=m+3 . What is the value of m?

Answer 1

Answer:

9^2+ 12^2=(m+3)^2

81+144=(m+3)^2

225=(m+3)^2

m+3=15

m=12

Answer 2

Step-by-step explanation:

(AC)²=(AB)²+(BC)²

(m+3)²=(9)²+(12)²

(m+3)²=81+144

(m+3)²=225

m²+9+6m=225

m²+6m-216=0

m²+18m-12m-216=0

m(m+18)-12(m+18)=0

(m-12) (m+18)

m=12,-18