3 years ago

How do you factor x squared minus 100

Mathematics

1 answer:

Alina [70]3 years ago

6 0

Answer:

(x - 10)(x + 10)

Step-by-step explanation:

x² - 100 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

Hence

x² - 100

= x² - 10² = (x - 10)(x + 10)

You might be interested in

A milk container's capacity is one gallon. How many cups would be equal?

kati45 [8]

1 gallon of milk would be 16 cups :)

4 0

3 years ago

Read 2 more answers

Sara has $1.30 less than double what Billy does. Sara has $53.72. How much money does Billy have?

lilavasa [31]

Answer:

Billy has $27.51

Step-by-step explanation:

First let's set up an equation to solve this problem.

Assign a variable to Billy's amount. Let's make it x.

Then we just interpret the problem and solve:

2x - 1.30 = 53.72

+1.30 +1.30

----------------------------

2x = 55.02

(Divide by 2 on both sides)

----------------------------

x = $27.51

2x = Billy's amount doubled

2x - 1.30 = Taking away 1.30 from double Billy's amount

53.72 = Sara's amount

6 0

4 years ago

A person who is 5 feet tall is standing 88 feet from the base of a tree, and the tree casts a 96 foot shadow. the person's sha

pashok25 [27]

5/8=x/96 96÷8=12 12×5=60

3 0

4 years ago

if a mobile was sold for Rs.24408 after allowing 10% discount on the marked price and adding 13% VAT.Findthe discount amount.

Kazeer [188]

Answer:

Hi, there!!!!

See explanation in pictures. 

I hope it helps you...

6 0

3 years ago

Please Help me answer all 4 questions with a full explanation so I can solve the rest on my own.

Nata [24]

$\\ \rm\Rrightarrow (2x^2)^3.2yx^0=8x^6.2y=16x^6y$

$\\ \rm\Rrightarrow (2x^4y^3)^3.2x^4y^4=8x^{12}y^6.2x^4y^4=16x^{16}y^{10}$

$\\ \rm\Rrightarrow (m^3n^0(2m^3n^2)^4)^2=(m^316m^{12}n^8)^2=(16m^{15}n^8)^2=256m^{30}n^{16}$

$\\ \rm\Rrightarrow (2xy^3)^2.2x^2y^0=4x^2y^6.2x^2=8x^4y^6$

6 0

2 years ago