Решите квадратное уравнение:
1.3x^2=18x
2.x^2-16x+63=0

3x²=18xx²=6xx²-6x=0x(x-6)=0x=0x-6=0x=0x=6x1=0; x2=6__________x²-16x+63=0x²-7x-9x+63=0x(x-7)-9(x-7)=0(x-7)*(x-9)=0x-7=0x-9=0x=7x=9x1=7; x2=9

1) 3x² = 18x3x² - 18x = 03x(x - 6) = 0x₁ = 0; x₂ = 62) x² - 16x + 63 = 0D/4 = (-16/2)² - 63 = 64 - 63 = 1x₁ = -(-16/2) + 1 = 8 + 1 = 9x₂ = -(-16/2) - 1 = 8 - 1 = 7