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davidduaoyg1hk
@davidduaoyg1hk
July 2022
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решите плиз номер 187
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isabelpachler
1) 15х+36x^2-36x^2-1=2,5x
15x-1=2,5x
15x-2,5x=-1
12,5x=-1
x=0,08
2)x^2-4=3(x^2+8x+16)-2x^2-10x
x^2-4=3x^2+24x+48-2x^2-10x
x^2-4=x^2+14x+48
x^2-X^2-14x=4+48
-14x=52
x=3,7
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Answers & Comments
15x-1=2,5x
15x-2,5x=-1
12,5x=-1
x=0,08
2)x^2-4=3(x^2+8x+16)-2x^2-10x
x^2-4=3x^2+24x+48-2x^2-10x
x^2-4=x^2+14x+48
x^2-X^2-14x=4+48
-14x=52
x=3,7