SOLUTION: Find a negative real number such that the square of the sum of the number and 21
is equal to 144 (If there are two correct answers, either answer can be entered.)
Algebra ->
Customizable Word Problem Solvers
-> Finance
-> SOLUTION: Find a negative real number such that the square of the sum of the number and 21
is equal to 144 (If there are two correct answers, either answer can be entered.)
Log On
Question 1135082: Find a negative real number such that the square of the sum of the number and 21
is equal to 144 (If there are two correct answers, either answer can be entered.) Found 2 solutions by josgarithmetic, ikleyn:Answer by josgarithmetic(39630) (Show Source):
= 144 ===============> which implies two consequences to be considered:
a) x+21 = = 12 ====> x = 12 - 21 = -9.
b) x+21 = = -12 ====> x = -12 - 21 = -33.
ANSWER. The problem has TWO SOLUTIONS. They are the numbers -9 and -33.
(