Answer:
a 3 + b 3 = (a + b) (a 2 − a b + b 2 ). Substituting a = x and b = 3 into the formula yields: x 3 + 27 = (x + 3) (x 2 − 3 x + 9).
Step-by-step explanation:
See attached work. Appologies for earlier confusion. Please mark Brainliest.
20 less than a number is equal to the number.
(y x .12) x .3 = the total cost
x = 9.9 in.
area of triangle = base * height /2
49 = x*x /2
49*2 = x^2
98 = x^2
= x
9.9 = x
the answer is A ..............