Did you learn how to factor the difference of two squares ?
This thing is the difference of two squares.
The first term is the square of 5x .
The second term is the square of 4 .
When it's factored, it's
(sum of the square roots) x (difference of the square roots) .
25 x² - 16 = (5x + 4) times (5x - 4) .
To check it, go ahead and FOIL that out, and you'll get 25x²-16 .
Answer:
Step-by-step explanation:
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Answer:
2 - 9
3 - 16
4 - 25.
Step-by-step explanation:
I think you want this:
2 - (2+1)(2+1)
3 - (3 + 1)(3+1)
4 - (4+1)(4 + 1)
You substitute 2, 3 and 4 into x - (x+1)(x+1) and work them out.
Unit rate (rise over run) can be determined from a graph by the amount a straight line goes up and across on a graph. The number the line rises on the graph (each point on the axes it crosses) goes over the the amount it goes across on the graph in fractional form.
