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Verdich [7]
3 years ago
12

Vertex form equation 4(x+2)^2-81 what is the solution?​

Mathematics
1 answer:
Andrei [34K]3 years ago
5 0

Answer:

<h3>            x₁ = 2.5 ,   x₂ = - 6.5               </h3>

Step-by-step explanation:

4(x+2)^2-81=0\\\\4(x+2)^2=81\\\\(x+2)^2=\frac{81}4\\\\x+2=\sqrt{\frac{81}4}\quad\vee\quad x+2=-\sqrt{\frac{81}4}\\\\x=\frac92-2\qquad\vee\quad\ x=-\frac92-2\\\\x=\frac52\qquad\vee\quad\ x=-\frac{13}2

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