The square of the difference of two terms is a special case that you should remember: it is equal to the square of the first, minus twice the product of the first and second, plus the square of the second:

(x - y)² = x² - 2xy + y²

For the binomial (3c - d)² you have that:

x = 3c

y = d

Thus:

(3c -d)² = (3c)² - 2(3c)(d) + d² = 9c² -6cd + d² ← answer

4 0

4 years ago

PLEASE HELP WILL GIVE BRAINLIEST!!

vovangra [49]

Answer:

b. side-angle-side

Step-by-step explanation:

3 0

3 years ago

Cora has some ice cream that she is serving for her friend , if Cora gives1/6 of a quart of ice cream to earth of her 8 friends,

zalisa [80]

Answer:

$\frac{4}{3} quarts$ of ice cream

Step-by-step explanation:

Given

Number of friends = 8

Size of ice cream = 1/6 quarts

Required

Total ice cream served

Let n represent the number of friends, s represent the size of ice cream and t represents total ice cream served;

t is calculated as thus;

$t = n * s$

$t = 8 * \frac{1}{6} quarts$

$t = \frac{8}{6} quarts$

Divide numerator and denominator by 2

$t = \frac{4}{3} quarts$

Hence, she serves $\frac{4}{3} quarts$ in total

8 0

4 years ago