Matematică, întrebare adresată de sorocean2000, 9 ani în urmă

(3x-4x)(3+4x)=
(2x-1supra5)(2x+1supra5)=
(y²-1)(y²+1)=
(x²-√3)(x²+√3)=
(√3x-√2)(√3x+√2)=
(x-5)(x+5)=
(2x-1)(2x+1)=
(8-1supra3x)(8+1supra3x)=
(x+√2)(x-√2)=
(1-0,5x)(1+0,5x)=

Răspunsuri la întrebare

Răspuns de samsunggenius200
1
a)(3x-4x)(3+4x)=(3x+4x)(3+4x)=(3x)(3)+(3x)(4x)+(4x)(3)+(4x)(4x)=9x+12x212x16x2=4x23xb)(2x1/5)(2x+1/5)=(2x+−1/5)(2x+1/5)=(2x)(2x)+(2x)(1/5)+(−1/5)(2x)+(−1/5)(1/5)=4x2+2/5x+−2/5x+−1/25=4x2+−1/25
c)
(y²-1)(y²+1)=(y2+−1)(y2+1)=(y2)(y2)+(y2)(1)+(−1)(y2)+(−1)(1)=y4+y2y2−1=y41
d)
(x²-√3)(x²+√3)=x43
e)
(√3x-√2)(√3x+√2)=3x22
f)(x-5)(x+5)=(x+−5)(x+5)=(x)(x)+(x)(5)+(−5)(x)+(−5)(5)=x2+5x5x−25=x225
g)(2x-1)(2x+1)=(2x+−1)(2x+1)=(2x)(2x)+(2x)(1)+(−1)(2x)+(−1)(1)=4x2+2x2x−1=4x21
h)(8−1/3x)(8+1/3x)=576x2−1/9x2
i)(x+√2)(x-√2)=x22
î)(1-0,5x)(1+0,5x)=(1+5x)(1+5x)=(1)(1)+(1)(5x)+(5x)(1)+(5x)(5x)=1+5x5x25x2=25x2+1

sorocean2000: multumesc mult!!!
samsunggenius200: poftim
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