Answer:
Step-by-step explanation:
12X-20=5-3X
12X+3X=5+20
16X=25
X=25/16=1.56
37
Explanation:
21+4(3^2−5)
= 21+4(9−5)
= 21+(4)(4)
= 21+16
= 37
Mordancy.
![( \sqrt[5]{x^4})( \sqrt[5]{x^4} )](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B5%5D%7Bx%5E4%7D%29%28%20%5Csqrt%5B5%5D%7Bx%5E4%7D%20%20%29)
=![\sqrt[5]{(x^4)(x^4)}](https://tex.z-dn.net/?f=%20%5Csqrt%5B5%5D%7B%28x%5E4%29%28x%5E4%29%7D)
![\sqrt[5]{x^8}](https://tex.z-dn.net/?f=%20%5Csqrt%5B5%5D%7Bx%5E8%7D)
=![( \sqrt[5]{x^5})( \sqrt[5]{x^3} )](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B5%5D%7Bx%5E5%7D%29%28%20%5Csqrt%5B5%5D%7Bx%5E3%7D%20%20%29)
=![x\sqrt[5]{x^3}](https://tex.z-dn.net/?f=x%5Csqrt%5B5%5D%7Bx%5E3%7D%20)