Question

Subtract 7x-3x² from -9x+8x²​

Answer 1

Answer:

-9x+8x²-(7x-3x²)

-9x+8x²-7x+3x²

11x²-16x.

Answer 2

To subtract :  $7x -3x^{2}$ from $-9x + 8x^{2}$

Solution :

• To subtract given algebraic expression, we subtract like terms together.
• Therefore, arranging given terms in correct order, we get,

        $(-9x + 8x^{2} ) - (7x -3x^{2} )$

• Removing parenthesis and changing sign of second term i.e. ($7x -3x^{2}$ ) we subtract given expressions.
• $-9x + 8x^{2} - 7x +3x^{2}$

        $= -16x + 11x^{2} \\= 11x^{2} -16x$

Hence, on subtracting  $7x -3x^{2}$ from $-9x + 8x^{2}$ we get $11x^{2} -16x$ .