In general, √(y²) = |y|, since y can be positive or negative and y² would have the same value either way.
So,
1) if y > 0, then |y| = y, and
-15√(y²) = -15 |y| = -15y
2) if y < 0, then |y| = -y, and
-√(16y²) = -|4y| = -|4| |y| = -4 (-y) = 4y
Answer:
Step-by-step explanation:
Putting value of x in the equation
3(5) + 5
= 15 + 5
= 20
Answer:
9.036 9.36 9.3611 9.4
Step-by-step explanation:
Answer:6,200,000,000
Step-by-step explanation: Since the exponent get smaller the number get bigger therefore don't get confused on whether it is a decimal because all whole numbers have a imaginary decimal.
