Will fan & medal ! 1. (3x + 1/2) (3x - 1/2) 2. (12x^3) (1/2x^6) 3.[2+(4b+4)]^2 4.[(9s+4)+8][(9s+4)-8]
what do you need to do, just expand those out and simplify it?
For 1 & 2 you FOIL it. I know how to do it, i just dont work with fractions that good
For 3 & 4, i dont know because i was absent when it was taught @DanJS
Yeah, need to distribute the first one, multiply like this pattern (a + b)*(c + d) = ac + ad + bc + bd
Yeah i know how to foil.. Its the fraction part i cant do
\[(\frac{ 1 }{ 2 })(\frac{ 3 }{ 1 })=\frac{ 6 }{ 2 }=3\]
It's okay, fractions are hard. Even in some of the higher level maths one of the most common mistakes made is dealing with these same rules with fractions.
Thanks
yeah multiplying fractions is easier than adding since you dont need a common denominator \[\large \frac{ a }{ b }*\frac{ c }{ d } = \frac{ a*c }{ b*d }\]
Right, exactly.
Got it. Thank you guys
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