Answer:
![y(x^2+1)(x^2-5)](https://tex.z-dn.net/?f=y%28x%5E2%2B1%29%28x%5E2-5%29)
Step-by-step explanation:
Factor the expression by first finding a GCF. Each term has the y variable and this can be pulled out as the GCF.
![x^4y-4x^2y-5y\\y(x^4-4x^2-5)](https://tex.z-dn.net/?f=x%5E4y-4x%5E2y-5y%5C%5Cy%28x%5E4-4x%5E2-5%29)
To further factor the expression break the polynomial into two binomials.
To factor into two binomials, find factors that multiply to -5 and add to -4.
-5 and 1 are factors and these make the binomials
.
The final factorization is ![y(x^2+1)(x^2-5)](https://tex.z-dn.net/?f=y%28x%5E2%2B1%29%28x%5E2-5%29)
Answer:
0.3276%
Step-by-step explanation:
-The percentage of error is the the percentage deviation from the real value.
-Given the real value is 427.4 m and the pedometer value is 426m, the % of error is calculated:
![e={Actual -Reading}\\\\=427.4-426\\\\=1.4\\\\\therefore\% e=\frac{e}{Actual}\times 100\%\\\\=\frac{1.4}{427.4}\times 100\%\\\\=0.3276\%](https://tex.z-dn.net/?f=e%3D%7BActual%20-Reading%7D%5C%5C%5C%5C%3D427.4-426%5C%5C%5C%5C%3D1.4%5C%5C%5C%5C%5Ctherefore%5C%25%20e%3D%5Cfrac%7Be%7D%7BActual%7D%5Ctimes%20100%5C%25%5C%5C%5C%5C%3D%5Cfrac%7B1.4%7D%7B427.4%7D%5Ctimes%20100%5C%25%5C%5C%5C%5C%3D0.3276%5C%25)
Hence, the percentage of error is 0.3276%
What do you mean? I don't get it