Question

sub (3 x square - 2 x + 5 x y - 7) from (8- 9 x y + 3 x square - 5 x)​

Answer 1

Answer:

6x²-7x-4xy+1

follow and thank

Answer 2

Answer:

Correct Question:-

Substract $\sf 3x^2-2x+5xy-7$ from $\sf 8-9xy+3x^2-5x$

Solution:-

• First write the equation properly

$\\ \qquad\qquad\sf:\longmapsto (8-9xy+3x^2-5x)-(3x^2-2x+5xy-7)$

$\\ \qquad\qquad\sf:\longmapsto (3x^2-5x-9xy+8)-(3x^2-2x+5xy-7)$

• Remove brackets

$\\ \qquad\qquad\sf:\longmapsto 3x^2-5x-9xy+8-3x^2+2x-5xy+7$

• Together like polynomials

$\\ \qquad\qquad\sf:\longmapsto 3x^2-3x^2-5x+2x-9xy-5xy+8+7$

• Add and subtract accordingly

$\\ \qquad\qquad\sf:\longmapsto 0-3x-14xy+15$

$\\ \qquad\qquad\sf:\longmapsto -3x-14xy+15$

• Take -1 common

$\\ \qquad\qquad\sf:\longmapsto -(3x+14xy-15$

• Simplify

$\\ \qquad\qquad\sf:\longmapsto 3x+14xy-15$