Calculate: (3x-4) * (2-5x)+15x^2

Expression: $\left( 3x-4 \right) \times \left( 2-5x \right)+15{x}^{2}$

Simplify the expression

$6x-15{x}^{2}-8+20x+15{x}^{2}$

Since two opposites add up to $0$, remove them from the expression

$6x-8+20x$

Collect like terms

$26x-8$