Answer: ab+a-b
ab+ac-a2
CLT( collect like terms)
ab+a2+ac-bc
ab+a-b.
Hope this is correct
For these kinds of expressions use FOIL (first, outside, inside, last).
-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2
Now combine them all:
-18x^2 + 78xy - 24y^2
Answer:
the blue dot is at -11 value on the number line.
The result of the multiplication in scientific notation is given by:

<h3>What is scientific notation?</h3>
A number in scientific notation is given by:

With the base being
.
When we multiply two numbers in scientific notation, we multiply the bases and add the exponents.
For this problem, the numbers are given by:

The result of the multiplication is given by:

The result of the multiplication in scientific notation is given by:

More can be learned about scientific notation at brainly.com/question/16394306
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