Разложите на множители:
a) y2 – 64; b) x2 -6x +9; c) 25x2 -81; d) 16a2 +24ab +9b2;
a) y2 – 64; b) x2 -6x +9; c) 25x2 -81; d) 16a2 +24ab +9b2;
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Ответ:
А) y^2-8^2=(y-8)*(y+8)b)(x-3)^2 c) (5x-9)*(5x+9)d)(4a+3b)^2