It's said "The value √-9 is not -3 because --------------------
So you need to prove why -3 is not the value of √-9.
As you know (-3)^2 = (-3) * (-3) = 9, ≠ -9
Answer is A.
(-3)^2 ≠ -9
15, since 16-1=15, and you can use the y-intercepts as points to measure the distance from.
We evaluate b^2 - 4ac. If the answer is positive, then there are two real solutions. If it is zero, there is one real solution. If it is negative, there are 2 complex solutions. In this equation, a = 1, b = 5, c = 7. Now we plug in the numbers.
Because this answer is positive, there are two real solutions.
81x - 126x ÷ 3x + 1
45x / 3x + 1
15x / x + 1
4.5 inches multiplied by 1.5 feet equals 6.75 feet.