Question

Use the quadratic formula to find the roots of the equation. 2x2 - 28x + 98 = 0
A. {-7, 7}
B. {7}
C. {-2, 49}
D. no real number solution
Is it A ?

Answer 1

B.

Answer 2

B.

Answer 3

D=b^2-4ac we get ...

D=784-76048 so the D is minus
and square root of minus is a complex number...

so the answer is ... NO REAL NUMBER SOLUTION !!

Answer 4

\[2x ^{2} - 28x + 98 \]
\[x^2 - 14x +49\]
\[(x-7)^2 = 0\]
x=7

Answer 5

Use the quadratic formula to find the roots of the equation. 2x2 - 28x + 98 = 0 read Carefully !!