williamthrashersyi
williamthrashersyi williamthrashersyi
  • 23-11-2020
  • Mathematics
contestada

x^2 + 7x – 18 = 0
a
{–2, 9}
b
{–9, 2}
c
{2, 9}
d
{–2, –9}

Respuesta :

Аноним Аноним
  • 23-11-2020

Answer:

b)-9,2

Step-by-step explanation:

x^2+7x-18=0

x^2+9x-2x-18=0

x(x+9)-2(x+9)=0

(x+9)(x-2)=0

therefore

x=-9

x=2

Answer Link

Otras preguntas

Kaliah spent 2/3 of her money on an outfit. She spent 3/8 of the rest on a necklace. If she has $15 left, how much did the outfit cost? *​
The sum of a number and eight is fifteen. Find the number.
2. Sally rolls a ball up to another person on a smooth ramp 19.6 m above her. The ball reaches the other person's hands when it is travelling 4.9 m/s uphill. If
He comes,—he comes,—the Frost Spirit comes You may trace his footsteps now On the naked woods and the blasted fields and the brown hill's withered brow. He has
Select the sentence that has correct subject-verb agreement. Either the cats or the dog eats my dinner when I go to the kitchen. Either the cats or the dog eat
Estimate the square root of the number to the nearest integer. √22
Mary is saving money to buy a game.So far she has saved $36,which is three-fourths of the total cost of the game.How much does the game cost?
a. 3.2 b. 12 c. 76 d. 152
Which of the following best defines hyponatremia? a. when a person runs out of oxygen and goes into anaerobic respiration b. when a person releases lactic acid
1. Review accounting principles unique to the client's industry 2. Determine the likely users of the financial statements 3. Evaluate the appropriate financial