Final answer:
Discover the new polynomial identity (x + y)² + (cy + d), and see how it unfolds through an algebraic proof and a numerical example. It simplifies equations and reveals deeper insights into polynomial relationships. Learn about graphing polynomials to visualize this identity's universal applicability.
Step-by-step explanation:
Our new identity takes the form:
(x + y) ² + (cy + d) = x² + 2xy + y² + cy + d
And now, let's delve into the algebraic proof!
Consider (x + y) ²:
- (x + y) ² = x² + 2xy + y²
Combine with cy + d:
Voilà! The algebraic form of our brand-new identity.
Now, witness the magic with a numerical proof! Let's substitute x = 2, y = 3, c = 4, d = 5:
- (2 + 3) ² = 25
- 4 × 3 + 5 = 17
- 25 + 17 = 42
As calculated:
- 2² + 2 × (2 × 3) + 3² + 4 × 3 + 5 = 42
Experience and learn about graphing polynomials to see how this identity holds up across various values. Transform your algebraic skills today with our indispensable polynomial identity!