How do you combine like terms in $7 x^{2} - 7 x + 5 + 4 x^{2} + 9 x - 6$ $7x ^ { 2} - 7x + 5+ 4x ^ { 2} + 9x - 6$ ?

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Answer 1 · 2018-03-22T18:56:35

$11 x^{2} + 2 x - 1$ $11x^2+2x-1$

Identify the like terms first and then combine them.

$color(blue)(7x^2)" " color(red)(-7x)" " color(green)(+5)" "color(blue)(+4x^2) " " color(red)(+9x)" " color(green)(-" "6)$

$=color(blue)(7x^2)" " color(blue)(+4x^2)" " color(red)(-7x)" " color(red)(+9x)" "color(green)(+5)" "color(green)(-" "6)$

$=color(blue)(11x^2)" " color(red)(+2x)" " color(green)(-1)$

How do you combine like terms in 7x ^ { 2} - 7x + 5+ 4x ^ { 2} + 9x - 67x2−7x+5+4x2+9x−67x ^ { 2} - 7x + 5+ 4x ^ { 2} + 9x - 6?