Maths Olympiad Prep

Track / Stage 1 / 224 of 240 #224 of 2444

Problem 224

Algebra Difficulty 1.9 Find the answer CEMC Fermat

Evaluate the expression 2x2+3x22x^{2}+3x^{2} when x=2x=2.

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Next problem →

Official solution

When x=2x=2, we obtain 2x2+3x2=5x2=522=54=202x^{2}+3x^{2}=5x^{2}=5 \cdot 2^{2}=5 \cdot 4=20.

Source: Omni-MATH, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.