d) (5x - 1)(x + 3) = (x - 5)(5x + 1) + 40
Answers
Answered by
2
Step-by-step explanation:
(5x-1)(x+3) = (x-5)(5x+1)+40
5x(x+3)-1(x+3) = x(5x+1)-5(5x+1)+40
5x^2 + 15x -x -3 = 5x^2 +x -25x -5 +40
15x-x-3 = x-25x-5+40
14x-3 = -24x-35
14x+24x = -35+3
38x = -32
Answered by
3
Step-by-step explanation:
(5x-1)(x+3)=(x-5)(5x+1)+40
=>5x^2+15x-x-3=5x^2+x-25x-5+40
=>14x-3= -24x+35
=>38x= 38
=>x= 1
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