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sorockiilya201
@sorockiilya201
July 2022
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Решите на картинке : 1а, 2б
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japangirl
1) (x+7)^2-x(x+14) = x^2 + 14x+49- x^2-14x= 49
2)b^2+5-10(b-2)= b^2 +5 - 10b + 20 =b^2-10b +25
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Lerok19
А) х^2+49-х^2-14=49-14=35
б) в^2+5-10в+20=в^2+10в+25=(в+5)^2
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doofelchmitz
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Answers & Comments
2)b^2+5-10(b-2)= b^2 +5 - 10b + 20 =b^2-10b +25
б) в^2+5-10в+20=в^2+10в+25=(в+5)^2