При каких значениях n равны значения выражений:
1)(10n+5)(2n-3) И (4n-3)(5n+2);
2)(3n-2)(4-6n) и (2n+1)(5-9n)?
1)(10n+5)(2n-3) И (4n-3)(5n+2);
2)(3n-2)(4-6n) и (2n+1)(5-9n)?
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Verified answer
120n²-30n+10n-15=20n²+8n-15n-6
-20n+7n=-6+15
-13n=9
n=-9/13
2
12n-18n²-8+12n=10n-18n²+5-9n
20n-n=5+8
19n=13
n=13/19