ja7zzgopaloves ja7zzgopaloves

24-11-2016
Mathematics

contestada

Solve the quadratic equation 5x2 - 125 = 0. Show all your steps.

Respuesta :

apologiabiology apologiabiology

24-11-2016

remember
a^2-b^2=(a-b)(a+b)

first factor out 5
5(x^2-25)=0
or
5(x^2-5^2)=0
5(x-5)(x+5)=0
set to zero
x-5=0
x=5
x+5=0
x=-5

x=-5 and 5

Answer Link

andriansp andriansp

25-11-2016

5x^2 - 125 = 0
5x^2 = 125
x^2 = 125/5
x^2 = 25
x = 5, -5

hope this help

Answer Link

Otras preguntas

Describe how you can change the problem by changing the quick picture

I am in need for instruction on how to find (7^8)(4^5) Can you help me

The warm-up period of a workout is important because it A. helps a person to exercise for a longer period of time. B. guarantees an injury-free workout.

6. when supplying an emergency supply kit for a family, which is the minimum number of days the supplies should last? a.) 2 b.) 3 c.) 7 d.) 30 7. in an emergenc

Turn y=-4/5x-7 into standard form

Work out tan(19pi/4) without a calculator

1.Which personal pronoun correctly completes the sentence? Cassie went to the restaurant with Jill and __________. A.she B.hers C.her D. I I think its c bu

the result of a number,when decreased by 20% ,is 192.find this

Assuming a 360-day year, when a $50,000, 90-day, 9% interest-bearing note payable matures, total payment will be

When walking through the woods Adam and Alise saw many mushroom-like organisms growing out of logs that were laying on the ground. These logs were pieces of tre