Question

鄭沛欣

請幫我解第六題，非常急
感謝

F
3. - 2x²+8x+42 = -2(x+7)(x-3)
4.
+(x+3x-108)
= "x² + =2x-18 = (x-9)(x+12)
5. 25x²-30x+9= (5x-3)
6. 4(2x-3)²-23 (3-2x) +15 2
=
(3-2x)(-2x-1)
7.125
*
(4x-6)-69-46x)+1
7. (ZX-1)(4x+7) + (2x-5) (1-2x)
= (2x-1)(4x+11)

Answer 1

✨ คำตอบที่ดีที่สุด ✨

ee

如圖

Answer 2

ligoio

🫰