#algebraic area problems

9 messages · Page 1 of 1 (latest)

frigid fulcrum Nov 30, 2022, 5:37 PM

Given that this is equal to 15 how would I solve It?

fluid matrix Nov 30, 2022, 5:38 PM

area of triangle is bxh/2

so (x+3)(x+4)/2=15

so (x+3)(x+4)=30

x^2+7x+12=30

x^2+7x-18=0

(x+9)(x-2)=0

x=2 or -9

but x cant be -9 or u get negative length so x=2