3 years ago

Find zeros of x^4-5x^2+4

Mathematics

1 answer:

OLEGan [10]3 years ago

4 0

When you multiply 2and 5

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What number must be added to the expression below to complete the square? x² - 18x

kiruha [24]

Answer:

$\boxed {\boxed {\sf 81}}$

Step-by-step explanation:

The standard form of a quadratic is:

$ax^2+bx+c$

To complete the square, the a (leading coefficient) must be 1 and there can only be terms with variables on one side.

The expression given:

$x^2-18x$

follows these rules. Next, we divide the b (linear coefficient) by 2, then square it. Basically:

$(\frac{b}{2})^2$

The b in the expression is -18.

$(\frac{-18}{2})^2$

$(-9)^2= -9*-9= 81$

This is the number that is added.

5 0

3 years ago

In the trapezoid below, x = [ ? ]. 2x+6 I 5x=20 4r+2

KonstantinChe [14]

Answer:

x = 12

Step-by-step explanation:

To get the value of x, we use the mid-segment theorem of trapezoid

The theorem is that the mid-segment is half the sum of the other two segments

We have this as

;

5x - 20 = 1/2(2x + 6 + 4x + 2)

2(5x-20) = 6x + 8

5x -20 = 3x + 4

5x -3x = 4 + 20

2x = 24

x = 24/2

x = 12

4 0

3 years ago

What would the equation be if the sum of t and 2 is equal to 5 less than t

TEA [102]

Answer:

$t=\frac{3}{2}$

Step-by-step explanation:

$t+2=5-t$

$2t+2=5$

$2t=3$

$t=\frac{3}{2}$

7 0

2 years ago

Record the sum in simplest form.1/2+1/4

Irina18 [472]

$\frac{1}{2}$ + $\frac{1}{4}$ = $\frac{3}{4}$

Explanation:

1/2 + 1/4 = ?

( 1/2 x 2/2 ) + ( 1/4 x 1/2 ) =

2/4 + 1/4 =

2 + 1 / 4 = 3/4

so, 1/2 + 1/4 = 3/4

4 0

3 years ago

Read 2 more answers

Translate into an equation The sum of two times a number and 5 is 11

Pachacha [2.7K]

2x+5=11

2 times x and 5 is 11.

3 0

3 years ago