DayDay131 DayDay131

03-06-2018
Mathematics

contestada

Which of the following are solutions to the equation below? Check all that apply. x2 + x - 20 = 0

Respuesta :

adrielcavalcant adrielcavalcant

03-06-2018

Δ = 1 + 4*20 = 81
x' = (-1 + 9)/2 = 4
x'' = (-1 - 9)/2 = -5
4² + 4 - 20 = 0
(-5)² - 5 - 20 = 0
Ok !

Answer Link

lamontgoff14 lamontgoff14

14-11-2019

Answer:-5 and 4

Step-by-step explanation:

apex

Answer Link

Otras preguntas

According to your reading material the most critical factor in controlling an interrogation is _______.(A) establishing the correct demeanor, (B) ensuring priva

simply and expand (6+x)(5-x)

Terry is 1.78cm tallSteven is 9cm taller than TerryHow tall is Steven?

what stabilizes the dna molecule during replication

Does anybody know what the aqa English literature paper 1 2020 about Romeo and Juliet is about?

During George Washington's Administration, what was the major reason for conflict between Thomas Jefferson and Alexander Hamilton? a.the distribution of power b

DANIELLE IS THROWING A PARTY AND NEEDS A CAKE & DRINKS. THE CAKE COST $19 AND DRINKS ARE $4 PER CASE. HOW MANY DRINKS CAN SHE BUY IF SHE HAS TO SPEND LESS T

what does the order/effectiveness of the law enforces in this cartoon tell you about prohibition?

Solve the equation x/8=3

Can someone please tell me the answer to this