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Leni [432]
3 years ago
15

Pls help picture provided

Mathematics
2 answers:
Zanzabum3 years ago
8 0

Answer: second option

Step-by-step explanation:

The standard form of a quadratic equation is:

ax^2+bx+c=0

Then, to write the quadratic equation given in the problem in standard form, you must substract 1 from both sides of the equation. Then you have:

2x^2+5x-1=0

Given the quadratic equation above, to find the value of b^2-4ac  you must substitute:

a=2; b=5 and c=-1 into b^2-4ac

Thenrefore, you obtain the following result:

5^2-4(2)(-1)=33

aleksley [76]3 years ago
3 0

Answer:

33

Step-by-step explanation:

The given quadratic equation is

1=2x^2+5x

We want to rewrite this equation in the form;

ax^2+bx+c=0

We add -1 to both sides of the equation to obtain;

0=2x^2+5x-1

This is the same as

2x^2+5x-1=0

This implies that;

a=2,b=5,c=-1

We substitute these values into the expression b^2-4ac

\Rightarrow 5^{2}-4(2)(-1)

=25+8

=33

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