[tex] \sqrt{x+15} [/tex] = x+ 3 x=?
Matematika
citrameidwisari
Pertanyaan
[tex] \sqrt{x+15} [/tex] = x+ 3
x=?
x=?
1 Jawaban
-
1. Jawaban debibrginting
[tex] (\sqrt{x+15})^2=(x+3)^2 [/tex]
x+15=x^2+6x+9
x^2+5-6=0
(x-1)(x+6)=0
x=1,x=-6