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DanielleElmas [232]
3 years ago
9

Write the quadratic equation in standard form. What is the value of b 2 - 4ac? 1 = 2x 2 + 7x 40 41 57

Mathematics
2 answers:
ella [17]3 years ago
5 0

Answer:

2x^2+7x-1=0

the value of b^2-4ac is 57

Step-by-step explanation:

1 = 2x^2 + 7x

Standard form of a quadratic equation is ax^2+bx+c=0

Subtract 1 on both sides to get the standard form of the equation.

2x^2+7x-1=0

Now we find the value of b^2-4ac

From the standard form, the value of a=2, b=7, c=-1

the value of b^2-4ac=(7)^2-4(2)(-1)=49+8=57

the value of b^2-4ac is 57

Likurg_2 [28]3 years ago
3 0
Hello : 
2x² +7x +1
a=2        b = 7      c =1
b²-4ac = (7)²-4(2)(1) =49 -8 =41
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