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how to solve this 
3(x²+7)

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Indrawboyviz

[tex]\rm 3(x^2+7)=3x^2+21[/tex]

Further explanation

One of the properties of number multiplication is the distributive property

There are 2 distributive properties to addition and subtraction

  • addition  

ax (b + c) = a x b + a x c  

  • subtraction  

ax (b-c) = a x b - a x c  

3(x² + 7) has the same multiplier factor of 3 so that we can change it with the distributive property

[tex]\rm 3(x^2+7)\\\\3x^2+3.7\\\\\boxed{\bold{3x^2+21}}[/tex]

Learn more  

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