sloamitlopez sloamitlopez

26-04-2017
Mathematics

contestada

identify the roots f(x)=3x^2-27

Respuesta :

apologiabiology apologiabiology

26-04-2017

factour ouf 3
f(x)=3(x²-9)
recognize diference of 2 perfect squres

a²-b²=(a+b)(a-b)
x²-9=x²-3²=(x+3)(x-3)

so
f(x)=3(x+3)(x-3)
seto to zero to find roots
0=3(x+3)(x-3)

0=x+3
-3=x

0=x-3
3=x

roots at x=-3 and 3

Answer Link

Otras preguntas

Which equation is equivalent to 3[x + 3(4x – 5)] = 15x – 24?

If you’re the victim of cyberbullying behavior, besides contacting your teacher or the school, where else can you go to find information?

Lisa completed the table to describe the product of a mystery one-digit factor and each number. × 1 2 3 4 5 ?

What were the circumstances of the lisbon earthquake of 1749, and what trauma did it pose for both orthodox christian theology and philosophical optimism? (what

what were the negative consequences of the British Raj

Consuming alchojol during pregnancy can cause which of these conditions in a fetus

The children left the playground late in the evening and went home they had to get up early in the morning. What is the correct punctuation

5x + 3 < 3(x+2 need help

Shawn is coasting down a 500 cm long ramp on his inline skates. The wheels on his inline skates are 32 cm in circumference. How many rotations does each wheel m

I want an explanation (nothing - something - everything - something)