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vesna_86 [32]
3 years ago
5

Solve. x² + 5x – 2=0

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
8 0

Answer:

1

Use the quadratic formula

=

−

±

2

−

4

√

2

x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}

x=2a−b±b2−4ac​​

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

2

+

5

−

2

=

0

x^{2}+5x-2=0

x2+5x−2=0

=

1

a={\color{#c92786}{1}}

a=1

=

5

b={\color{#e8710a}{5}}

b=5

=

−

2

c={\color{#129eaf}{-2}}

c=−2

=

−

5

±

5

2

−

4

⋅

1

(

−

2

)

√

2

⋅

1

Step-by-step explanation:

this should help

Yuri [45]3 years ago
3 0
Solve the equation for X
by finding A B and c
of the quadratic then applying the quadratic formula.

I hope this helps !!

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I don't know how to do this. Help please
ASHA 777 [7]
Here is your equation simplified 

Hope it helps!

7 0
3 years ago
Write three different examples of the sum of a quadratic trinomial and a cubic monomial.
polet [3.4K]

Answer:

A trinomial is a sum of three terms, while a multinomial is more than three. Quadratic is another name for a polynomial of the 2nd degree. For example, 2x2 − 7x + 5.

Step-by-step explanation:

hope it help brainliest pls

3 0
2 years ago
A line parallel to a triangle's side splits AB into lengths of x − 6 and x + 1. The other side, AC, is split into lengths of x a
Aleks [24]
AC = 39

Side Am/mB (x + 1)/(2x - 5)
Side Am/mC (x + 21)/(2x + 21)
m is the point where the parallel line is.
AB = AC
(x+1)/(2x -5) =(x +21)/(2x+21)
Cross multiply.
(x+1)(2x+21)=(2x-5)(x+21)
2x^2+23x+21=2x^2+37x-105
Subtract 2x^2 from both sides.
23x+21=37x-105
Subtract 23x from both sides.
21= 14x -105
Add 105 to both sides
126 = 14x
Divide both sides by 14
x = 9
Plug 9 back in for x in
2x + 21
2(9) + 21 = 39
4 0
3 years ago
Read 2 more answers
Choose the function whose graph is given by:
denpristay [2]

Answer:

A

Step-by-step explanation:

I put the equation into a GeoGebra graphing calculator, and y=sin(x-2) matches the graph.

6 0
3 years ago
Make up a question that you need to use 6 fractions to solve! It needs to involve subtraction. It can involve addition too.
Ket [755]

Answer:

6/4-3/2(12/8+27/4)9/8x30/12=

6 0
2 years ago
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