November 2018 1 13 Report

c) -2x² - 13 x +24=0

d) x²+4x+4 =0

e) - x²+12 x -36=0

f) -3 x²+x-2=0

g) 5x² -2x+3=0

rozwiazac tak jak w tym przykladzie

x²+10x+25=0

a=1

b=10

c=25

trojkat = b²-4ac

trojkat=100-4*1*25

trojkąt= 100-100

trojkat = 0

x 0=-b=-10=-10 = -5

2a 2*1 2

równanie ma jedno rozwiazanie x = -5

PROSZE O POMOC PILNE !!!!1


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