# 1ปรนัยข้อใดเป็นการแยกตัวประกอบของพหุนาม x3−y3x^3-y^3x3−y3(x−y)(x2−xy+y2)\left(x-y\right)\left(x^2-xy+y^2\right)(x−y)(x2−xy+y2)(x+y)(x2+xy+y2)\left(x+y\right)\left(x^2+xy+y^2\right)(x+y)(x2+xy+y2)(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)(x−y)(x2+xy+y2)(x−y)(x2+2xy+y2)\left(x-y\right)\left(x^2+2xy+y^2\right)(x−y)(x2+2xy+y2)
# 2ปรนัยข้อใดเป็นการแยกตัวประกอบของพหุนาม x3−8y3x^3-8y^3x3−8y3(x−2y)(x2+2xy+y2)\left(x-2y\right)\left(x^2+2xy+y^2\right)(x−2y)(x2+2xy+y2)(x−2y)(x2+2xy+4y2)\left(x-2y\right)\left(x^2+2xy+4y^2\right)(x−2y)(x2+2xy+4y2)(x−2y)(x2−2xy+4y2)\left(x-2y\right)\left(x^2-2xy+4y^2\right)(x−2y)(x2−2xy+4y2)(x−2y)(x2+xy+4y2)\left(x-2y\right)\left(x^2+xy+4y^2\right)(x−2y)(x2+xy+4y2)
# 3ปรนัยข้อใดเป็นการแยกตัวประกอบของพหุนาม a3b3+1000a^3b^3+1000a3b3+1000(ab+10)(a2b2−10ab+100)\left(ab+10\right)\left(a^2b^2-10ab+100\right)(ab+10)(a2b2−10ab+100)(ab−10)(a2b2+10ab+100)\left(ab-10\right)\left(a^2b^2+10ab+100\right)(ab−10)(a2b2+10ab+100)(ab−10)(a2b2−10ab+100)\left(ab-10\right)\left(a^2b^2-10ab+100\right)(ab−10)(a2b2−10ab+100)(ab+10)(a2b2+10ab+100)\left(ab+10\right)\left(a^2b^2+10ab+100\right)(ab+10)(a2b2+10ab+100)
# 4จริง/เท็จ512m3−343n3=(8m−7n)(64m2+56mn+49n2)512m^3-343n^3=\left(8m-7n\right)\left(64m^2+56mn+49n^2\right)512m3−343n3=(8m−7n)(64m2+56mn+49n2) ถูกหรือผิด