Question

find the roots of the quadratic equation 2 x square minus root 5 x minus 2 equal to zero using the quadratic formula

Answer 1

2x^2-root5x-2=0
D= b^2-4(a)(c)
D=(-root5)^2-4(2)(-2)
D= 5+16
D= 21

x= -b plus minus rootD/2a
x= -(-root5)plus root 21/2(2)= root5+root21/4,
root5-root21/4

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Answer 2

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