Question

2 elevado a x ao quadrado -7x+12 =1

Answer 1

vamos lá...

$2^{ x^{2} -7x+12} =1 \\ \\ 2^{ x^{2} -7x+12} =2^0 \\ \\ x^{2} -7x+12=0$

Δ=(-7)²-4(1)(12)
Δ=49-48
Δ=1

x=(-b±√Δ)/2a=[-(-7)±√1)/2=(7±1)/2
x'=(7+1)/2=8/2=4
x"=(7-1)/2=6/2=3

S={3,4)