they give mcq type questions and all are maths relate questions.which kind of formulas should i use for solve them?

they give mcq type questions and all are maths relate questions.which kind of formulas should i use for solve them?

please give me a correct answer.thanks

thank you very much.

Need simplification for the maths problem

Need factors for the maths problem

I need factors for that maths problem.Thank you very much for the support

please Give me an explanation for the correct answer.thanks

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