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2 years ago

Was the expression a^2-b^2 = (a+b)(a-b) invented or discovered?

Mathematics

2 answers:

Andreyy892 years ago

6 0

Answer:

the expression is invented

Contact [7]2 years ago

3 0

I would say it was discovered.
Expanding (a + b)(a - b)
= a(a - b) + b(a - b)
= a^2 - ab + ba - b^2
= a^2 - b^2
So factorising the difference between two squares simply reverses the equation

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Which of the following describes graphing y ≥ |x| + 4?

kolbaska11 [484]

Answer:

Translate $y=\left|x\right|$ up $4$ units and shade inside the V

Step-by-step explanation:

we know that

The function $y=\left|x\right|$ has the vertex at point $(0,0)$

The function $y=\left|x\right|+4$ has the vertex at point $(0,4)$

the rule of the translation is

$(x,y)------> (x,y+4)$

That means

The translation is $4$ units up

The solution of the inequality $y\geq\left|x\right|+4$

is the shaded area inside the V

see the attached figure to better understand the problem

therefore

the answer is

Translate $y=\left|x\right|$ up $4$ units and shade inside the V

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2 years ago

Read 2 more answers

Write 4/27 as the product of a prime raised to a power

Sphinxa [80]

Answer:

write 4/27 as the product of a prime raised to a power

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2 years ago

A computer and printer cost a total of $939. The cost of the computer is two times the cost of a printer. Find the cost of each

nika2105 [10]

Answer: P=313 and C=626

Step-by-step explanation:

939=2x+x

939=3x

313=x Printer is 313 and computer is 626

626+313=939

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3 years ago

Please help me it urgent i need help i beg you guys!

nordsb [41]

Solve for y in the first equation.

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2 years ago

What is 62394 rounded to the nearest ten

Semmy [17]

Answer:

62390

Step-by-step explanation:

you have to round up if it's 5 or more and round down if it's less.

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