A <em>difference of squares</em> is exactly what it suggests - the difference between two perfect squares. 25 - 9, 4 - 1, x² - 25, and 125 - b² are just a few examples. Differences of squares factor very nicely, too. For any difference of squares x² - y²:
x² - y² = (x + y)(x - y)
We can see that this is true by taking the right side of the equation and distributing:
(x + y)(x - y) = (x + y) · x + (x + y) · (-y) = x² + xy - xy - y² = x² - y²
We notice in our given expression that 36 is a perfect square - namely, 6². We want the expression x² + ?x - 36 to look like x² - 6², which we can accomplish if we replace the question mark with a 0.
You can draw 12 lines
Draw a dime and two pennies
Draw a circle and cut it into 12 different pieces
Write out the number 12 Twelve
Write 12
Answer:
36.9 degrees
Step-by-step explanation:
Calcolate the sine of the angle BAC by dividing the opposite cathetus by the hypthenuse. That gives us 3/5 = 0.6. Now use the calculator to calculate the amplitude of the amgle by using the sin^-1 (or arcsin) function, so write sin^-1(0.6)=36.9.
Answer: A transformation will <u><em>Sometimes</em></u> have a number
Step-by-step explanation: