write discriminant of following quadratic equation 9 x square + 7 x minus 2 equals to zero
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write discriminant of following quadratic equation 9 x square + 7 x minus 2 equals to zero
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Answer:
D=11
Step-by-step explanation:
D=√b^2-4ac
9x^2+7x-2=0 (given)
a=9
b=7
c= -2
D=√(7)^2-4(9)(-2)
D=√49-4(-18)
D=√49+72
D=√121
D=11
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