Answer:
x = ± ![\sqrt{10](https://tex.z-dn.net/?f=%5Csqrt%7B10)
Step-by-step explanation:
x² = 10 ( take square root of both sides )
x = ± ![\sqrt{10}](https://tex.z-dn.net/?f=%5Csqrt%7B10%7D)
Answer:
C) 4/3 = DE/9
Step-by-step explanation:
I don't have much time to explain, so just trust me on this. :)
CR = CP = 17
PQ = QR = 15
CQ = x^2 +15^2 = 17^2 = x^2 + 225 = 289
x^2 = 289-225 = 64, sqrt(64) = 8, CQ = 8
Step-by-step explanation:
= (3x² + x + 8) + (x² - 9)
= (3 + 1)x² + x + (8 - 9)
= 4x² + x - 1