Answer:
a= 2 ; b= 7 ; c= 5
x= - 7 ± √(7)² + 4(2)(5) / 2(2)
x= -7 ± √49 + 40 / 4
x= -7 ± √ 89 / 4
x= -7 ± 9.43 / 4
x1= -7 + 9.43 / 4
x1= 2.43 / 4
x1 = 0.607 or 0.61
x2= -7 - 9.43 / 4
x2= -16.43 / 4
x2= -4.107 or -4.11
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Answer:
a= 2 ; b= 7 ; c= 5
x= - 7 ± √(7)² + 4(2)(5) / 2(2)
x= -7 ± √49 + 40 / 4
x= -7 ± √ 89 / 4
x= -7 ± 9.43 / 4
x1= -7 + 9.43 / 4
x1= 2.43 / 4
x1 = 0.607 or 0.61
x2= -7 - 9.43 / 4
x2= -16.43 / 4
x2= -4.107 or -4.11