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dansuba
07.11.2019 •
Mathematics
(3x²y³{4}z)
when multiplying the variables, do you multiply the x by the x next to the y^{4}z, and the y with the y^{4}? i asked my teacher this question for a similar problem and he said not to. when i asked my dad for with this problem, he said that you do and the answer is -15x^{3}y^{7}z. which method is correct?
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Ответ:
x^m=x times itself m times
REMEMBER THAT MULCTIPLICATION IS COMMUTATIVE
a(bc)=(ab)c
so basically
(abc)(3ac)=a*b*c*3*a*c=a*a*c*c*b*3=3a^2bc^2
group and regroup and move around
so in your problem
(3x^2y^3)(-5xy^4z)=
(3)(x^2)(y^3)(-5)(x)(y^4)(z)=
(3)(-5)(x^2)(x)(y^3)(y^4)(z)=
(-15)(x^3)(y^7)(z)=
-15x^3y^7z
Ответ:
okkka
Step-by-step explanation: