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torisob [31]
3 years ago
5

Is x^ 2 - 16 the difference between two squares? Why?

Mathematics
2 answers:
bekas [8.4K]3 years ago
5 0

Answer:

yes, x^ 2 - 16 is equal two (x+4)(x-4), which is a differnce between two squares ot the formula, a^2-b= (a+b)(a-b)

bearhunter [10]3 years ago
3 0

Answer:

x1= -4

x2 = 4

Step-by-step explanation:

Set the equation equal to zero

x2 − 16 = 0

then

(x + 4)(x − 4) = 0

(x+4)= 0 which is equal to -4

and

(x-4)= 0 equals 4

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The sum of three numbers is 95. The first number is 5 more than the third. The second number is 4 times the third. What are the
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3 years ago
Solve : <br> 20-9x=11<br> 4(2x+1)=8<br> 5(2x+5)=-15<br> 3(8x+1)=-21
laila [671]
<span>20-9x=11
-9x=11-20
-9x= -9
x= -9/(-9)
x=1


4(2x+1)=8
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5(2x+5)=-15
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</span>
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