MaryvonneHodge MaryvonneHodge

11-12-2018
Mathematics

contestada

What are the solutions of the equation (2x + 3)^2 + 8(2x + 3) + 11 = 0? Use u substitution and the quadratic formula to solve.

What are the solutions of the equation 2x 32 82x 3 11 0 Use u substitution and the quadratic formula to solve class=

Respuesta :

meadow77 meadow77

11-12-2018

u=2x+3, x=u/2-3/2
u^2+8u+11=0
u1=(-8+sqrt(64-44))/2=-4+sqrt(5)
u2=-4-sqrt(5)
x1=u1/2-3/2=-7/2+sqrt(5)/2
x2=u2-3/2=-7/2-sqrt(5)/2

Answer Link

tashaketchup tashaketchup

06-11-2019

Answer:

x=-7+/5 /2

Step-by-step explanation:

Answer Link

Otras preguntas

Solve the compound inequality and graph the solution

Solve the equation (x-9)^6-13(x-9)^3+42=0

Can somebody please help me with this question I need help ASAP

Find the area of a plane figure bounded by lines 1.y=x^2+2x+4, y=x+6 2.y=x^2+6x+5, y= - x^2-6x-11

I have two questions I need help with. 1. If Earth's mass is 20% higher, how long would it take Earth's orbital period around the sun? (In days/years please) 3

CAN SOMEONE PLEASE ANSWER THIS ASAP FOR BRAINLIEST!!! What is the greatest common factor of 30b^2, 80b^2, and 20b^3?

The U.S. Maritime Administration estimated that the cost per ton of building an oil tanker could be represented by the model y=104,000/x+235 where y is the cost

Can someone help me find the answer ASAP like now. It’s worth 10 points

What 2x+5x+8=10x+15+x

Can someone help me find the answer ASAP like now. It’s worth 10 points