Question

(x+3) ² = 52

me ajudem a fazer essa contaaaaaaaaaaa por favor

Answer 1

(x+3)²=52

(x+3)(x+3)=52

x²+3x+3x+9=52

x²+6x+9=52

x²+6x+9-52=0

x²+6x-43 =0

Vai para bhaskara

Δ = b²-4×a×c

Δ=6²-4×1×(-43)

Δ=36-4×(-43)

Δ=36+172

Δ=208

x=$\frac{-b+/-√Δ}{2a}$

x=$\frac{-6+/-√208}{2x1}$

x=$\frac{-6+/-14,42}{2}$

x=$\frac{-6+/-14,42}{2}$

x1=4,21

x2=-10,21