Step-by-step explanation:
i believe what you need help on is simplifying the equations. so let's start with the first one.
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(2x+1)(x+5) original problem
(2x)(x)+(2x)(5)+(1)(x)+(1)(5) we can break this down into smaller pieces so we know what we're dealing with in this equation.
2x2+10x+x+5 if we break this down a little more and add some bracket numbers, this is what we get.
2x2+11x+5 <em>this is the most simplified equation.</em>
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6x−4xy original problem.
unlike the last problem, we can easily just... <em>6x + (−4xy)</em>.
−4xy+6x <em>this is the most simplified equation.</em>
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ok, the last one. phew!
unfortunately, 16x^2-25 is actually the simplest it can get. so, let's try factoring.
if we factored, we would get...
(4x+5)(4x−5)
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hope this helps! :>
