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Viktor [21]
2 years ago
5

I need help with three and four

Mathematics
2 answers:
mart [117]2 years ago
4 0

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:

(2x-1)(2x-1)(2x-1)

Doing the first 2 brackets gives us:

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

Expanding these two:

8x^{3} -4x^{2} -8x^{2} +4x+2x-1

Simplifying it:

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

Bumek [7]2 years ago
3 0

Answer

43x (36) 60 - 4 (30)

Step-by-step explanation:

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