3 years ago

Solve the quadratic equation by completing the square x²+12x+26=0

Mathematics

1 answer:

vova2212 [387]3 years ago

4 0

Answer:

x={-13,-2}

Step-by-step explanation:

(x+13)(x+2)=0

x+13=0

x=-13

x+2=0

x=-2

x={-13,-2}

You might be interested in

A solid cube of side 18 cm is cut into 8 cubes of equal volume what will be the side of the new cube ? Also find the ratio betwe

maks197457 [2]

The volume of the original cube = 18^3 = 5,832 cubic cm

5,832 / 8 cubes = 729 cubic cm.

Side length = Cubicroot729 = 9

The side length is 9 cm

5 0

4 years ago

Read 2 more answers

(02.05 MC)

Amiraneli [1.4K]

Table for f(x)

$\boxed{\begin{array}{c|c}\boxed{\bf x}&\boxed{\sf f(x)}\\ \sf 0 &\sf 1 \\ \sf 2&\sf 9\\ \sf 4 &\sf 17\end{array}}$

Table for g(x)

$\boxed{\begin{array}{c|c}\boxed{\bf x}&\boxed{\sf g(x)}\\ \sf 0 &\sf 1 \\ \sf 2&\sf 7\\ \sf 4 &\sf 13\end{array}}$

Option C is correct

3 0

3 years ago

Read 2 more answers

Combine like terms. Please help me.

My name is Ann [436]

Answer:

15y^2-45

Step-by-step explanation:

5y^2+10y^2-45 = 15y^2-45

3 0

4 years ago

Find the unknown side: V u 2.5 85 26

tia_tia [17]

Answer:

u ≈ 5.7

Step-by-step explanation:

Using the Sine rule in Δ TUV, that is

$\frac{t}{sinT}$ = $\frac{u}{sinU}$ , substitute values

$\frac{2.5}{sin26}$ = $\frac{u}{sin85}$ ( cross- multiply )

u × sin26° = 2.5 × sin85° ( divide both sides by sin26° )

u = $\frac{2.5sin85}{sin26}$ ≈ 5.7 ( to 1 dec. place )

5 0

3 years ago

Is it true that a plane contains at least the non-colinear points

vitfil [10]

This statement is true :) please mark brainliest

4 0

4 years ago