2 years ago

What is an efficient way to compute 47^2–37^2 without using raw calculations?

Mathematics

1 answer:

e-lub [12.9K]2 years ago

6 0

Answer:

(47+37)(47-37)

Step-by-step explanation:

47^2-37^2 is a difference of two squares. a^2-b^2 = (a+b)(a-b) so this expression can be factored to (47+37)(47-37) = (84)(10) = 840

You might be interested in

On the first day that tickets to the school play were sold, 100 tickets were sold for $230. Regular tickets cost $3 and student

algol [13]

30 of the $3 tickets were sold
70 of the $2 tickets were sold.

(3*30) + (2*70) = 230

6 0

3 years ago

Read 2 more answers

Least common multiple of z^2+6z+9 and z^2+z-6

Firdavs [7]

Hint: $\bf \begin{array}{ccllll}
z^2+6z+9&z^2+z-6\\
\downarrow &\downarrow \\
(z+3)(z+3)&\underline{(z+3)(z-2)}
\end{array}$

5 0

3 years ago

Find the area of a triangle with base 4cm and height 7cm

Oksi-84 [34.3K]

Answer:

A=14cm²

Step-by-step explanation:

A=hbb

2=7·4

2=14cm²

3 0

2 years ago

Read 2 more answers

A polynomial P has zeros when x=0, x=-1/6 and x=-3 Whats could be the equation p?

erma4kov [3.2K]

Answer:

P(x) = $x^{3}$ + $\frac{19}{6} x^{2}$ + $\frac{1}{2} x$

Step-by-step explanation:

x(x + 1/6)(x + 3) = P

x( $x^{2}$ + 3x + 1/6(x) + 1/2) = P

x ( $x^{2}$ + 19/6(x) + 1/2) = P

$x^{3}$ + $\frac{19}{6} x^{2}$ + $\frac{1}{2} x$ = P(x)

4 0

2 years ago

How do I find the average rate of change?

Alenkasestr [34]

Answer:

add them all up together and then divide by the number of items

Step-by-step explanation:

8 0

3 years ago