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Sveta_85 [38]
3 years ago
5

What is the value of 1+(-7)-(-2.5)?​

Mathematics
1 answer:
adell [148]3 years ago
4 0
Step 1: remove parentheses
1-7+2.5
step 2:simplify 1-7 to -6
-6+2.5
step 3 :simplify
-3.5
the answer is -3.5
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-3(x^{2} +5x+10) is the standard form of the given expression

The given expression is:

=-3(x+3)^{2} -3+3x\\\\=-3*(x^{2} +2*3*x+3^{2} )-3+3x\\\\=-3x^{2} -3*6x-3*9-3+3x\\\\=-3x^{2} -18x-27-3+3x\\\\=-3x^{2} -15x-30\\\\=-3(x^{2} +5x+10)

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Ber [7]

Answer:

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Step-by-step explanation:

C x D = A x B

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