2x² -6x -20=0 solve using quadratic formula with complete solution
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2x² -6x -20=0 solve using quadratic formula with complete solution
pa help nmn po
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Answer:
a= 2 ; b= -6 ; c= -20
x= -(-6) ± √(-6)² - 4(2)(-20) / 2(2)
x= 6 ± √36 + 160 / 4
x= 6 ± √ 196 / 4
x= 6 ± 14 / 4
x1= 6 + 14 / 4
x1= 20 / 4
x1= 5
x2= 6 - 14 / 4
x2= -8 / 4
x2= -2