Question

(x-5) (40-x). =124. ​

Answer 1

$(x - 5)(40 - x) = 124 \\ 40x - x {}^{2} - 200 - 5x = 124 \\ x {}^{2} - 35x = 124 - 200 \\ x { }^{2} - 35x = 76 \\ x { }^{2} - 35 - 76 = 0$

hope it's help you.

Answer 2

Step-by-step explanation:

(x−5)(40−x)=124

40x−x

2

−200−5x=124

x

2

−35x=124−200

x

2

−35x=76

x

2

−35−76=0