simplify (x + 5) (x - 4) =(x +,7) (x - 9) +
(x - 1)(x - 2) - (x - 3) (x – 4)
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Answer:
(x+5)(x-4)=(x+7)(x-9)+(x-1)(x-2)-(x-3)(x-4)
Step-by-step explanation:
- X^2+4x+5x-20=(x^2-9x+7x-36)+(x^2-2x-1x+2)(-x^2+4x+3x-12)
- X^2+9x-20=2x^2-x^2-11x+4x+6x+3x+61-12
- X^2+9x-20=x^2+2x+49
- X^2-x^2+9x-2x=49+20
- 7x=69
- X=9. 8
- Approx;
- x=10
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