ก. 2X + 6 = 3(X + 2)

ข. M² + M – 12 = (M + 4 )(M - 3)

ค. (X + Y)Z - 6(X+ Y) = (X + Y)(Z + 6)

ง. ถูกทุกข้อ

ก. X² + 7X + 10

ข. X² - 3X - 10

ค. X² - 7X + 10

ง. X² + 3X - 10

ก. y(14 - 26z)

ข. 2(7y - 13zy)

ค. (y-zy)(14-26)

ง. 2y(7-13z)

ก. 8(-1-12x)

ข. 4(2-3x)

ค. -4(2-3x)

ง. -4(2+3x)

ก. (m+y)(n²+8)

ข. 2(m-y)(n²-8)

ค. (n²+8) (m-y)

ง. (n²-8) (m+y)

ก. x²+bx+c

ข. ax²+bx+c

ค. ax²+by+c

ง. ax²-bx-c

ก. x(x+9+14)

ข. (x+7)(x+2)

ค. (x-7)(x-2)

ง. (x-7)(x+2)

(7x - 4)(4x + 11)

(7x + 4)(4x - 11)

(7x - 11)(4x + 4)

(7x + 4)(4x - 11)

(8x - 6)(4x + 6)

(8x + 6)(4x - 6)

(8x - 6)(4x - 6)

(8x + 6)(4x + 6)

(5x - 18)(3x - 16)

(5x + 18)(3x + 16)

(5x + 16)(3x + 18)

(5x - 16)(3x - 18)

(8x - 7)(2x - 17)

(8x + 7)(2x + 17)

(8x - 17)(2x - 7)

(8x + 17)(2x + 7)

(2x-1)(x+1)

(2x-1)(x-1)

(2x+1)(x+1)

(2x+1)(x-1)

(3x-2)(x+1)

(3x+2)(x-1)

(3x-1)(x+2)

(3x+1)(x-2)

 $\left(49y-3\right)^2$  

 $\left(49x+3\right)^2$  

 $\left(7y-3\right)^2$  

 $\left(7y+3\right)^2$  

 $\left(2x-9\right)^2$  

 $\left(2x+9\right)^2$  

 $\left(4x-9\right)^2$  

 $\left(4x+9\right)^2$  

 $\left(18x-10\right)^2$  

 $\left(81x-10\right)^2$  

 $\left(9x-10\right)^2$  

 $\left(9x+10\right)^2$  

 $\left(3x-100\right)^2$  

 $\left(3x+10\right)\left(3x-10\right)$  

 $\left(9x-10\right)^2$  

 $\left(3x-10\right)\left(3x-10\right)$  

 $\left[\left(x+1\right)+3\right]^2$  

 $\left[\left(x+1\right)+6\right]^2$  

 $\left[\left(x+1\right)+9\right]^2$  

 $\left[\left(x+1\right)+10\right]^2$  

น²+ล²=(น-ล)(น+ล)

น²-ล²=(น-ล)(น+ล)

น²+ล²=(น+ล)(น+ล)

น²-ล²=(น-ล)(น-ล)

(x + 9)(9 + x)

(x + 3)(x - 9 )

(x - 18)(x +18)

(9 -x)(9 + x)

(2x + 4 )(x + 4)

(2 + x )(1 + x )

(2x - 1)(2x + 1)

(2x - 5)(2x + 5)

(3x + 5)(3x - 5)

(3x - 5)(3x - 5)

(9x + 5)(9x - 5)

(9x + 25)(9x - 25)

(7x - 8)(7x + 8)

(49x - 9)(49x + 9)

(7x - 9)(7x + 9)

(7x - 9)(7x - 9)

(8y - 15)(8y + 15)

(8y - 25)(8y + 25)

(9y - 15)(9y + 15)

(9y - 25)(9y + 25)

(y - x)(y + x)

(y + x)(y + x)

(x - y)(x - y)

(x - y)(x + y)

ไม่มีข้อใดถูกต้อง

(x + 9)(x + 7)

(x - 9)(x - 7)

(x + 9)(x - 7)

$\left(x-1\right)^2-25=\left(x-6\right)\left(x+4\right)$

$\left(3x+1\right)^2-4=\left(3x-1\right)\left(3x+3\right)$

$\left(1+x\right)^2-16=\left(x-3\right)\left(x+5\right)$

$\left(x+1\right)^2-4x^2=\left(1+x\right)\left(1+3x\right)$

 $\left(10-9\right)\left(10+9\right)$  

 $\left(10+9\right)\left(10-9\right)$  

19

ถูกทุกข้อ