3 years ago

Solve the quadratic formula 2x^2+9x=-7

Mathematics

1 answer:

andriy [413]3 years ago

5 0

Answer:

Step-by-step explanation:

2x² + 9x = -7

2x² + 9x + 7 = 0

When we multiply we should get 2*7 = 14 and when we add we should get 9. Find the factors of 14 ---> 1,2,7,14. Factors are 2,7 as when we multiply we get 14 and we we add, get 9

2x² + 2x + 7x + 7 = 0

2x( x + 1) + 7 (x + 1) = 0

(x + 1)(2x + 7) = 0

You might be interested in

20% оf x is 130. What is x?<br> x Clear

lord [1]

Answer:

650

Step-by-step explanation:

brainliest please

3 0

2 years ago

Write the point-slope equation for each line with the given slope and point. y –y1 = m(x – x1) Slope = 5 Point on line = (–1, 3)

snow_lady [41]

Answer:

$y-3=5(x+1)$

Step-by-step explanation:

Point-Slope form is: $y-y_1=m(x-x_1)$

'm' - Slope

(x1, y1) - Point Coordinate

We are given the point of (-1,3) and the slope of 5.

Replace 'm' with 5, 'x1' with -1, and 'y1' with 3:

$y-y_1=m(x-x_1)\rightarrow\boxed{y-3=5(x+1)}$

4 0

3 years ago

Help please screenshot

Bingel [31]

48 cm. You have 16 units and know that 2 of them equal 6 cm. So you can either divide 16 by 2 and multiply by 6 or notice that each square is worth 3 cm and multiply 16 by 3 to get 48.

7 0

2 years ago

Solve x - 6 = -12 A) -18 B) -6 C) 2 D) 6

asambeis [7]