What is (x + 2)² expanded?
Ax² + 4
Bx² + 2x + 4
Cx² + 4x + 4
Dx² - 4
Answer & Solution
Correct answer: C. x² + 4x + 4
(a+b)² = a² + 2ab + b². So (x+2)² = x² + 2(x)(2) + 4 = x² + 4x + 4.
Related questions
Which expression is equivalent to $3(x + 2) - (x - 4)$?The line $y = 4$ intersects the parabola $y = x^2 - 4$ at how many points in the xy-plane?Which expression is equivalent to $\frac{2}{x+1} - \frac{1}{x-2}$?The function $h(x) = a \cdot b^x$ passes through $(0, 12)$ and $(1, 36)$. What is the valuA bacteria culture starts with 80 cells and grows by 25% per hour. Which function models tFor the function $f$, $f(0) = 200$ and $f(x)$ decreases by 50% for each increase of $x$ byIn the xy-plane, the line $y = 5$ intersects the parabola $y = x^2 + bx + 9$ at exactly onHow many distinct real solutions does the equation $(x+2)^2 = -9$ have?