9514 1404 393
Answer:
12.0 cm
Step-by-step explanation:
The Pythagorean theorem applies:
(12 cm)² +b² = (17 cm)²
b² = (289 -144) cm² = 145 cm²
b = √145 cm ≈ 12.04 cm
b ≈ 12.0 cm . . . . rounded to 1 decimal place
I guess its 3.5x (edited) .....
Im a little confused here because there isn't enough information to go on or I might be reading it wrong.
Parenthasees
the first onewould evaluate to 4x²
the 2nd one would just be -2x²
