maddi12903 maddi12903
  • 24-10-2019
  • Mathematics
contestada

Need help!!!

1. Solve the equation:
x^2-4x+4=100

A. x= -4; x=10
B. x= -8; x=12
C. x= -5; x=25
D. x= 10; x=10

Respuesta :

anfloyd82 anfloyd82
  • 24-10-2019

Answer:

B.

Step-by-step explanation:

Move 100 to the left side and subtract from both sides. Then subtract 100 from 4. Factor x^2-4x-96 using the AC method.=0 x^2+bx+c. Find a product that is -96 and a sum -4. This will be -12, 8. The factored form is (x-12)(x+8)=0. Then, solve for x.

(x-12)=0 (x+8)=0. You get x=12, -8.

Answer Link

Otras preguntas

(SHOW THE SOLUTION)​
Conjuga el verbo entre paréntesis a la forma correcta del presente del subjuntivo Quiero que tú (alimentar) mi perro.
Characteristics of quadratics How many zeros does this parabola have? What are the intercept(s)
Assume x represents an integer number, what is the highest index value in the following array? byte[] values = new byte[x]; Group of answer choices
please help I am begginggggggg​
An acceleration in the collection of receivables will tend to cause the accounts receivable turnover to Group of answer choices remain the same increase decreas
95 points fast. …….
write and simplify an expression for the volume of a rectangular prism with length 7.5ft width w ft and height 4.2ft what is the volume if the width 2 ft​
Who was crowned the first czar of Russia? O Ivan the Terrible O Romanov O Stalin O Peter the Great
For f(x) = x2 and g(x) = (x − 5)2, in which direction and by how many units should f(x) be shifted to obtain g(x)? Hint: In g(x), if there is a NEGATIVE k value