Question

sum of 4+3x and 2x2-4x+5,subtract the sum of 3x2-5x and -x2+2x+5​

Answer 1

Step-by-step explanation:

Sum:=4+3x+2x²-4x+5=2x²-x+9

subtract the sum. 3x²-5x+(-x²+2x+5)=2x²-3x+5

subtract them the sums =2x²-3x+5-2x²-x+9

=-2x-4

-(2x+4) is answer of this question OK friend

Answer 2

CORRECT QUESTION :-

★ From the sum of 4 + 3x and 2x² - 4x + 5 , Subtract the sum of 3x² - 5x and -x² + 2x + 5.

TO FIND :-

• The required answer.

SOLUTION :-

• [ According to question, firstly we have to find the sum of 4 + 3x and 2x² - 4x + 5 ]

→ [(4 + 3x) + (2x² - 4x + 5)]

→ [4 + 3x + 2x² - 4x + 5]

• [ By collecting the like terms ]

→ 2x² + 3x - 4x + 4 + 5

→ 2x² - x + 9 ------------------(1)

• [ Now we will find the sum of 3x² - 5x and -x² + 2x + 5 ]

→ [(3x² - 5x) + (-x² + 2x + 5)]

→ [3x² - 5x + -x² + 2x + 5]

• [ By collecting the like terms ]

→ 3x² - x² - 5x + 2x + 5

→ 2x² - 3x + 5 ------------------(2)

• [ Now according to question we have to subtract (2) from (1). ]

→ [(2x² - x + 9 ) - (2x² - 3x + 5 )]

→ [2x² - x + 9 - 2x² + 3x - 5]

• [ By collecting the like terms ]

→ 2x² - 2x² - x + 3x + 9 - 5

→ 2x + 4

★ Hence the required answer is 2x + 4.