setzer12 setzer12

28-08-2016
Mathematics

Answered

Write the quadratic equation in standard form. What is the value of b 2 - 4ac?

1 = 2x 2 + 7x

Verified Answer :

28-08-2016

b^2 - 4ac > 0
2x^2 +7x -1 =0
b =7 a=2 c= -1
b^2 - 4ac = 7^2 - 42(-1)
= 49 + 8
= 57

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