m4yrajentr7yuale m4yrajentr7yuale

23-05-2016
Mathematics

contestada

What are the solution(s) to the quadratic equation x2 – 25 = 0?

A.x = 5 and x = –5
B.x = 25 and x = –25
C.x = 125 and x = –125
D.no real solution

Respuesta :

apologiabiology apologiabiology

23-05-2016

difference of 2 perfect squares
a^2-b^2=(a-b)(a+b)
25=5^2
x^2-5^2=(x-5)(x+5)=0
set to zero
x-5=0
x=5
x+5=0
x=-5

x=5 or -5

A

Answer Link

Otras preguntas

Minerals form from magma in predictable patterns in a process known as A. Bowen's reaction series. B. partial melting. C. fractional crystallization.

What is the radicand of 3x^2 − 16x + 2 = 0?

how did Separation of Powers help the written constitutions help governments avoid the abuse of governments ( tyranny ) ?

i don't know how to do 4 or 5 , help ?

Which of the following defines logical fallacy? A. a method of reasoning B. an unrelated point C. a sequence of events D. a mistake in logic

which individuals/groups make up the state legislative committees

An art teacher had to 2/3 gallon of paint to pour into containers if he poured 1/8 gallon of paint into each container until he ran out of paint how many contai

The primary factor affecting the auditor's acceptable risk of incorrect acceptance is assessed as inherent risk when quantifying audit risk

In 1722 a Dutch explorer sighted Easter island. Identify each word used as an adjective. Which pronoun or noun does it modify

the swimming club's indoor pool is in a rectangular building Marco is laying tile around the rectangular pool