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3 years ago

6

X2 + 5x +4=0 How do we do this

2 answers:

miv72 [106K]3 years ago

5 0

Answer: x=−1 or x=−4

Step-by-step explanation: Solve by factoring

FrozenT [24]3 years ago

4 0

Answer:

(x+1)(x+4)

Step-by-step explanation:

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PLEASEE HELPPPP MEEE

andrew11 [14]

Here hope this helpssssss

7 0

3 years ago

Can someone help mee pleaseee

Darina [25.2K]

f(x) = x^2 - 13x + 30

Step-by-step explanation:

A quadratic equation may be expressed as a product of the two binomials. The roots of the equations are 3 and 10, so the factors are (x-3) and (x-10).

f(x) = (x-3)(x-10)

f(x) = x^2 - 13x + 30

3 0

3 years ago

Match the system of equations on the left with the appropriate solution on the right.

VARVARA [1.3K]

Answer:

$x=7-2y$ $(1,3)$

$3x+6y=-9$ $(-1,-1)$

$4x-2y-3$ $\text{no solution}$

$2x+4y=7$ $\text{infinite number of solutions}$

$x=-2y-3$ $(1,-2)$

Step-by-step explanation:

1: $x=7-2y$

$\Rightarrow x+2y=7$

$\Rightarrow (1,3)\;\text{is a solution of the above equation}.$

2: $3x+6y=-9$

$\Rightarrow 3(-1)+6(-1)=-3-6=-9$

$\Rightarrow (-1,-1)\; \text{is a solution of the equation 3x+6y=-9}.$

3: $4x-2y-3$

$\Rightarrow \;\text{It is not an equation}\\ \text{So, 4x-2y-3 has no solution.}$

4: $2x+4y=7$

$\Rightarrow 2x+4y=7\;\text{have an infinite number of solutions.}\\\text{Because for every x there exists a value of y which satisfies the equation.}$

5: $x=-2y-3$

$\Rightarrow x+2y=-3$

$\Rightarrow 1-2(-2)=1-4=-3$

$\Rightarrow (1,-2)\; \text{is a solution of the equation x=-2y-3}.$

7 0

4 years ago

3z + 2 + (-5) + 6 PLS HELP NEED TO TURN IN BY 2:30

Ostrovityanka [42]

Answer:

ok, but what does z in the equation equal? Since its a letter it has to equal to a number

5 0

3 years ago

2) What is the slope of a line perpendicular to the line y = 2x – 3 ?

-BARSIC- [3]

Answer:

The correct answer is c.

7 0

3 years ago

Read 2 more answers