Factor $10x+50$10`x`+50.

Easy

Less than a minute

Factor $k^2-81$`k`2−81.

Factor $3x+xz-39y-13yz$3`x`+`x``z`−39`y`−13`y``z`.

Factor $x^2+12x+36$`x`2+12`x`+36.

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Factor binomials (e.g., 4x^2 + 8x) and trinomials (e.g., 3x^2 + 9x – 15) involving one variable up to degree two, by determining a common factor using a variety of tools and strategies (e.g., patterning)

Factor simple trinomials of the form x^2 + bx + c, using a variety of tools and strategies

Factor the difference of squares of the form x^2 – a^2 (e.g., x^2 – 16)