3 years ago

Xsquaredminus 4xplus3=0

1 answer:

6 0

X² - 4x + 3 = 0
x² + (-4x) + 3 = 0
x = -(-4) +/- √((-4)² - 4(1)(3))
 2(1)
x = 4 +/- √(16 - 12)
 2
x = 4 +/- √(4)
 2
x = 4 +/- 2
 2
x = 4 + 2 x = 4 - 2
 2 2
x = 6 x = 2
 2 2
x = 3 x = 1

You might be interested in

If 50% is 15 what is 25%

Liono4ka [1.6K]

THE ANSWER TO YOUR QUESTIONS IS 7.5

3 0

3 years ago

How many real does this 2x^2-5x+3=0 equation have

Pavlova-9 [17]

2 $x^{2}$ -5x+3=0

x= $\frac{-(-5)+ \sqrt{(-5) ^{2}-4*2*3 } }{2*2}$

x=3/2;x=1

3 0

3 years ago

How do we figure out 6 2/5 times 3 1/6

tino4ka555 [31]

Turn it improper 6 2/5 = 32/5
3 1/6 = 19/6
Multiply across
19/6*32/5 = 508/30 reduces to 254/15 hope this helps

3 0

3 years ago

Cos(8x+21)=sin(-2x+51) Find the two angles represented in degrees ??? Someone help its 1am I can't do this

wolverine [178]

Answer:

45 and 135degrees

Step-by-step explanation:

Cos(8x+21)=sin(-2x+51) Find the two angles represented in degrees ??? Someone help its 1am I can't do this

In trigonometry, cosx = sin(90-x)

Hence:

Cos(8x+21) = sin(90-(8x+21))

Cos(8x+21) = sin(90-8x-21)

Cos(8x+21) = sin(-8x+69)

Substituting into the expression given, :

sin(-8x+69) = sin(-2x+51)

-8x+69 = -2x+51

-8x+2x = 51-69.

-6x = -18.

X = 18/6

X = 3

Since the angles 8x+21

Angle = 8(3)+21

Angle = 45

The angles represented in degrees are 45 and (180-45) = 135degrees

8 0

3 years ago

If a dozen eggs cost $1.35 what is the unit cost? A) $0.11 B)$0.13 C)$1.23 D)$4.29

Romashka-Z-Leto [24]

Answer:

A) $0.11 is answer

Step-by-step explanation:

Please Mark at brainlist

5 0

2 years ago