A^2-b^2=(a+b)(a-b) label perfect square trinomial or difference two square
1 answer:
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3x + 5 = 23
5 more than(addition) 3 times(multiplication) a variable(x) is(equals) 23
(you add 5 to 3x)
If you need to solve for "x", you need to isolate/get the variable "x" by itself in the equation:
3x + 5 = 23 Subtract 5 on both sides
3x + 5 - 5 = 23 - 5
3x = 18 Divide 3 on both sides to get "x" by itself
x = 6
Answer:
-17
Step-by-step explanation:
<em>given:</em>
-3x^2 - 2x -9 when x= -2
<em>rewriting so it's easier to view:</em>
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<em>substituting:</em>
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<em>simplifying step-by-step:</em>
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-17
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Hope this helps, have a nice day! :D