makaileep7449
27.09.2021 •
Mathematics
Plz help me in my math questions..
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Ответ:
Step-by-step explanation:
6. -x²y²(x□+x²y²-y□)[ only ans.is want to see symbols writing along with wht square you writing ] [e.g . □ = 2]
(1.) -x²y²-x⁴y⁴+x²y⁴7. (3a+2b)(5a+7b) → 3a(5a+7b)+2b(5a+7b) → 15a²+21ab + 10ab+14b² → 15a² + 31ab +14b²» So(1) is correct8. (2) –2009. (1) 6x⁴-4x³+9x²-21x+1010. (2) a□b□11. (1) 3x²y+x²-2xy12. (4) 2x+19Ответ:
the answer is B
Step-by-step explanation: