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jonny [76]
3 years ago
13

Hi!! I need some help with those exercises can anybody help me please !! Thanks you

Mathematics
1 answer:
elena55 [62]3 years ago
6 0

Answer:

Step-by-step explanation:

(a+b)^2=a^(2)+2ab+b^(2)

(a-b)^2=a^(2)-2ab+b^(2)

13)

(x+2)^(2)-(x-1)^2

x^(2)+4x+4-(x^(2)-2x+1)

x^(2)+4x+4-x^(2)+2x-1

6x+3

15)

(x+5)^(2)-(x+1)^2

x^(2)+10x+25-(x^(2)+2x+1)

x^(2)+10x+25-x^(2)-2x-1

8x+24

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3 years ago
The inequality 5x - 2y + 1 > 0 is satisfied by point (-2, -1). True False
Ira Lisetskai [31]

Answer:

False

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6 0
3 years ago
Read 2 more answers
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masya89 [10]

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7 0
3 years ago
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miss Akunina [59]

Answer:

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Step-by-step explanation:

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2 years ago
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