Question

Chou

求！這個要怎麼十字交🙏

(x + 4)
(4x-2)
(3x-1)
(x+3)

十字交乘 相似形

Answer 1

✨ 最佳解答 ✨

綾

=> (x + 4)(5x + 3) = (4x - 2)(3x - 1)
=> 5*x^2 + 23x + 12 = 12*x^2 - 10x + 2
=> 7*x^2 - 33x - 10 = 0
=> (7x + 2)(x - 5) = 0
=> x = -7/2 or 5