3 years ago

Please someone help me with this question

Mathematics

1 answer:

const2013 [10]3 years ago

7 0

Basically something like this

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Answer:

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Step-by-step explanation:

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3 years ago

X - y = 4

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Answer:

3. 6

Step-by-step explanation:

X - y = 4 ( Equation 1 )

X + y =8 ( Equation 2 )

equation 1 + equation 2

; 2x = 12

x = 12÷2

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2 years ago

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mart [117]

Answer:

3: $a^{2}+2ab+b^{2}$

4: $8x^{3} -12x^{2}+6x-1$

Step-by-step explanation:

Question 3 can be re-written as:

$(a+b)(a+b)$

which equals:

$a^{2}+2ab+b^{2}$

Question 4 can be re-written as:

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Doing the first 2 brackets gives us:

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Expanding these two:

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2 years ago

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