Question

plzz solve 25th question​

Answer 1

Answer:

x = -bc / (ad)

Step-by-step explanation:

ad²x [ ax/b + 2c/d ] + c²b = 0

<=> a²d²x²/b + 2acd²x/d + bc² = 0      [ expanded bracket ]

<=> a²d²x² + 2abcdx + b²c² = 0          [ multiplied by b ]

<=> (adx)² + 2(bc)(adx) + (bc)² = 0       [ just wrote things differently to make next step easier to see ]

<=> (adx + bc)² = 0

<=> adx + bc = 0

<=> x = - bc / (ad)