Simplify these questions
1). (5x-3)(x+4)-(2x+5)(3x-4)
2). (9x-7)(2x-5)-(3x-8)(5x-3)
3). (2x+5y)(3x+4y)-(7x+3y)(2x+2y)
Answers
1. (5x-3)(x+4)-(2x+5)(3x-4)
BODMAS FIRST MULTIPLY AND THEN SUBTRACT
5x (x+4)-3 (x+4)-2x (3x-4)+5 (3x-4)
=5x^2+20x-3x-12-6x^2+8x+15x-20
=-x^2+40x-32
this is the answer
i became tired answering this one question .
this question is worth for 5 points .
use this same method for the other 2 sums .
hope this one answer helped you
brainliest please
bye .
The questions were many so I skipped a few steps. Hope you are able to understand.
1) (5x-3)(x+4)-(2x+5)(3x-4)
=5x^2+20x-3x-12-(6x^2-8x+15x-20)
=5x^2+17x-12-6x^2-7x+20
=-x^2+10x+8
2) (9x-7)(2x-5)-(3x-8)(5x-3)
= 18x^2 -45x -14x +35 - (15x^2 -9x-40+24)
= 18x^2 -59x +35 -15x^2 +9x +40x -24
=18x^2 -10x +11
3) (2x +5y)(3x +4y) -(7x +3y)(2x+2y)
=6x^2 +8xy +15xy +20y^2 -(14x^2 +14xy +6xy +6y^2)
=6x^2 +23xy +20y^2 -14^2 -20xy -6y^2
=-8x^2 +3xy +14y^2
If by mistake there is any error, feel free to say I'll rectify it .