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What is the discriminant for the quadratic expression? 24x2 + 13x A. 73 B. 524 C. 265 D. 169
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(Based on todays review)
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apologiabiology
The discriminant is the bit in the quaratic equaiton under the squaer root sign
that is b^2-4ac
3 cases
if
b^2-4ac>0, there are 2 real roots
b^2-4ac=0, there is 1 real root
b^2-4ac<0, there are 2 imaginary roots
ax^b+bx+c=0
24x^2+13x
a=24
b=13
13^2-4(24)
169-96
73
discriminatn is 73 A
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