因式分解(x2+7y2+10)(x2+9x+18)-28(x2+7y2+10)(x2+9x+18)-28因式分解题求解法

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因式分解(x2+7y2+10)(x2+9x+18)-28(x2+7y2+10)(x2+9x+18)-28因式分解题求解法
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因式分解(x2+7y2+10)(x2+9x+18)-28(x2+7y2+10)(x2+9x+18)-28因式分解题求解法
因式分解(x2+7y2+10)(x2+9x+18)-28
(x2+7y2+10)(x2+9x+18)-28
因式分解题求解法

因式分解(x2+7y2+10)(x2+9x+18)-28(x2+7y2+10)(x2+9x+18)-28因式分解题求解法
(x²+7x+10)(x²+9x+18)-28
=(x+2)(x+5)(x+3)(x+6)-28
=(x+2)(x+6)(x+5)(x+3)-28
=(x²+8x+12)(x²+8+15)-28
=(x²+8x+13.5-1.5)(x²+8+13.5+1.5)-28
=(x²+8x+13.5)²-2.25-28
=(x²+8x+13.5)²-30.25
=(x²+8x+13.5)²-5.5²
=(x²+8x+13.5+5.5)(x²+8x+13.5-5.5)
=(x²+8x+19)(x²+8x+8)