Answer:
❊ ![\large{ \tt{STEP - BY - STEP \: EXPLANATION}} :](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Ctt%7BSTEP%20-%20BY%20-%20STEP%20%5C%3A%20EXPLANATION%7D%7D%20%3A%20)
♡ Firstly , Here are some of the questions & their answers which should be known before simplifying the given expression :
Q. Do I have to change the sign of each term of second expression while subtracting ?
Ans : Yep! While subtracting , sign of each term of the second expression changes whereas In addition , sign of each term in the expressions remains unchanged.
Q. What do you mean by Like terms & Unlike terms ?
Ans : Well , Like terms are those which have the same base whereas Unlike terms are those which have the different base [ For eg : In 4x , 2y , 3x & 4y , 4x & 3x are like terms and 2y and 4y are like terms ]. Also Remember : Only coefficients of like terms can be added or subtracted.
The Question / Answer part ends up here. Now , Let's get started for simplifying the given expression :
![\large{ \bf{❊ \: ( - 5 {x}^{} + 6 {x}^{2} ) - (6 {x }^{2} - 5x)}}](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Cbf%7B%E2%9D%8A%20%5C%3A%20%28%20-%205%20%7Bx%7D%5E%7B%7D%20%20%2B%206%20%7Bx%7D%5E%7B2%7D%20%29%20-%20%286%20%7Bx%20%7D%5E%7B2%7D%20%20-%205x%29%7D%7D)
![\large{ \bf{ ↬ \: - 5x + 6 {x}^{2} - 6 {x}^{2} + 5x}}](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Cbf%7B%20%E2%86%AC%20%5C%3A%20-%205x%20%2B%206%20%7Bx%7D%5E%7B2%7D%20%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%205x%7D%7D)
![\large{ \bf{↬ - 5x + 5x + 6 {x}^{2} - 6 {x}^{2} }}](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Cbf%7B%E2%86%AC%20-%205x%20%2B%205x%20%2B%206%20%7Bx%7D%5E%7B2%7D%20%20-%206%20%7Bx%7D%5E%7B2%7D%20%7D%7D)
-Here , We can see the like terms with different signs. So, they cancel out each other.
![\large{ \bf{↬ \: \cancel{5x} + \cancel{5x}} + \cancel{6 {x}^{2}} - \cancel{6 {x}}^{2} }](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Cbf%7B%E2%86%AC%20%5C%3A%20%20%5Ccancel%7B5x%7D%20%20%2B%20%20%5Ccancel%7B5x%7D%7D%20%2B%20%20%5Ccancel%7B6%20%7Bx%7D%5E%7B2%7D%7D%20-%20%20%5Ccancel%7B6%20%7Bx%7D%7D%5E%7B2%7D%20%20%7D)
-We're left with nothing , So the answer would be ' 0 ' .
![\boxed{ \large{ \bf{↬0}}}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%20%5Clarge%7B%20%5Cbf%7B%E2%86%AC0%7D%7D%7D)
![\boxed{ \boxed {\large{ \tt{⟿ \: OUR\: FINAL \: ANSWER : \boxed{ \underline{ \bf{0}}}}}}}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%20%5Cboxed%20%7B%5Clarge%7B%20%5Ctt%7B%E2%9F%BF%20%5C%3A%20OUR%5C%3A%20FINAL%20%5C%3A%20ANSWER%20%3A%20%20%5Cboxed%7B%20%5Cunderline%7B%20%5Cbf%7B0%7D%7D%7D%7D%7D%7D%7D)
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