Alessandro wrote the quadratic equation -6=x2+4x-1 in standard form. what is the value of c in his new equation?
c=-6
c=-1
c=5
c=7

c = 5

Step-by-step explanation:

A quadratic expression is an expression of the form

ax^2 + bx + c = 0

If we rewrite the expression, we get

-6=x^2+4x-1

x^2+4x -1 +6 = 0

x^2+4x +5 = 0

The answer is c = 5

The correct answer is third option

c = 5

Step-by-step explanation:

Points to remember

Standard form of a quadratic equation

ax² + bx + c = 0

It is given that, -6 = x² + 4x - 1

To find the standard form

-6 = x² + 4x - 1

⇒   x² + 4x - 1 = -6

x² + 4x - 1 + 6= 0

x² + 4x + 5 = 0

To find the value of c

Let equation be,  x² + 4x + 5 = 0

Here a = 1, b = 4 and c = 5

Therefore the correct answer is third option

c = 5

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

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