Question

$\frac{4}{5} {x}^{2} = 45$
va rog frumos

Answer 1

4x^2/5=45

4x^2=5*45

4x^2=225

x^2=225/4

x=+-√225/4

x1=15/2

x2=-15/2

x∈{-15/2;15/2}

Answer 2

4/5 * x² = 45
x² = 45 * 5/4
x² = 225/4
x² = 56,25
x = √56,25
x = 7,5