alexisgoff
alexisgoff alexisgoff
  • 18-05-2021
  • Mathematics
contestada

Solve for x.

x2 + 4x - 21 = 0

A.) -3,-7
B.) -3,7
C.) 3,-7
D.) 3,7

Respuesta :

dronslover
dronslover dronslover
  • 18-05-2021

Answer:

x=3 or x= −7

Step-by-step explanation:

Answer Link
goddessboi goddessboi
  • 18-05-2021

Answer:

C) 3,-7

Step-by-step explanation:

x² + 4x - 21 = 0 (Given)

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

x+7 = 0 and x-3 = 0 (Zero Product Property)

x = -7 and x = 3 (Final Solutions)

Therefore, C is correct

Answer Link

Otras preguntas

Calculate the number of moles 41.0 g of Ca(NO3)2  1.48 g of Ca(OH)2  3.40 g of CaSO4
is 85 a multiple of 6
how can I round 10899 to the nearest ten thousand
Find the unknown digit to make each statement true 5.345>5.34_>5.343
swish,ping, and zoom are examples of_____ ? a. palindromes. b. onomatopoepia . c. affixes d. acronyms
what is 1286 rounded to the nearest ten
what is 5.264 rounded to the nearest hundredth
What is the irrational number in This set: 12.89, square root of 12 and 12/144 ?
when laurie said that sea gulls were consecrating, instead of congregating aound the lobster boat,everyone laughed at her _____. a. colloquialism b. acronyms c
using rounding or compatible numbers to estimate the sum 222 + 203 Im a bit confuse of rounding to 5's