Question

Reescreva a equação 5 - (x-3) = 2x - (x-2)² na forma ax² + bx + c = 0, a ≠ 0  ( Com cálculos)

Answer 1

Olá!!



5-(x-3) = 2x-(x-2)(x-2)

5-x+3 = 2x-(x²-2x-2x+4)

5-x+3 = 2x-x²+2x+2x-4

5-x+3 = 6x-x²-4

x²-7x+12 = 0

Answer 2

5-(X-3)=2X-(X-2)²
5X+15=2X-(X-2.X-2)
5X+15=2X-X²-2X-2X+4
5X+15=2X-X²-4X+4
X²+5X-2X+4X+15-4=0
X²+7X+11=0
A=1  B=7  C=11
delta=b²-4.a.c
delta=7²-4.1.11
delta=49-44
delta=5