brandenrodriguez305 brandenrodriguez305

24-06-2022
Mathematics

contestada

Solve using the factoring method: x2 + 4x - 21 = 0

Respuesta :

26-06-2022

Answer:

x² + 4x - 21 = 0

x² + 7x - 3x - 21 = 0

x ( x + 7 ) -3 ( x + 7 ) = 0

( x - 3 ) ( x + 7 ) = 0

∴ x - 3 = 0 or x + 7 = 0

x = 0 + 3 x = 0 - 7

x = 3 x = -7

Answer Link

Otras preguntas

how to write a story context that would be represented by the ratio 1:4

13. One factor determining the number of representatives for a given congressional district is the distribution of _______ within the state. A. wealth B. regist

What Are The Tumble Dryer Inputs Outputs And Processes?

how to write a story that would be represented by the ratio 1:4

Which of the following statements about the decades before World War I is correct? Select the best answer from the choices provided. A. Germany unified and expe

What effect did the Punic Wars have on Rome's military development?

Which two countries were in conflict because they both tried to settle in the Upper Ohio River Valley? (Points : 1) France and Spain Spain and Portugal France a

Mark the statements that correctly describe British rule in India. A.The British first assumed control of India by fighting a terrible war. B. The British East

is 80 oz less than 5 lb

If you spend $35 in a jacket during a 60% off clearance sale, what is the original price of the jacket?