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marmar3000
 3 years ago
Simplify (4x − 5)^2.
marmar3000
 3 years ago
Simplify (4x − 5)^2.

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FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0(a+b)^2=a^2 + b^2 + 2ab

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1does that mean "multiply"? start with \[(4x+5)(4x+5)\] and do four multiplications

FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0(ab)^2 = a^2 + b^2 2ab

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1oops rather \[(4x5)(4x5)\]

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1do four multiplications, combine like terms, and then tell your teacher (gently) that there is nothing "simpler" about your result than there is in \((4x5)^2\)

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1oh no! careful here

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1four multiplications i will write them out

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1\[(4x5)(4x5)=4x\times 4x5\times 4x5\times 4x+5\times 5\]

FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0(4x5)^2 = 16x^2 40x +25.

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1then \(4x\times 4x=16x^2\) \(5\times 4x5\times 4x=20x20x=40x\) \((5)\times (5)=25\) final answer is \[16x^240x+25\]

FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0now factorize it or solve by formula \[x=b \pm \sqrt{b^{2}4ac}/2a\]

FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0no marmar it's 16x^2  40x +25. not 16x

FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0now use quadratic formula or apply factorization method.it's up to u

FaisalAyaz
 3 years ago
Best ResponseYou've already chosen the best response.0U got it marmar? just use formula (ab)^2 = a^2 + b^2 2ab. then find x by factorization or quadratic formula.Simple!
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