Question

Please help answer this!!!

Answer 1

49)
`12\,b^4`

50)
`200\,x^6`

Explanation:

Use the properties of exponent to reduce this expressions:

a)
`3\,b\,*\,4 \,b^3=(3\,*\,4)\,(b\,*\,b^3)=12\,b^((1+3))=12\,b^4`

b)
`5\,x^2\,*\,8\,x\,5\,*\,x^3=(5\,*\,8\,*\,5)\,(x^2\,*\,x\,*\,x^3)=200\,x^((2+1+3))= 200\,x^6`