Berapa jumblah nya (x + 5) (5x – 7)

(x + 5) (5x -7)
= (x × 5x) + ( x × -7) + (5 × 5x) + (5 × -7)
= 5x^2 – 7x + 25x – 35
= 5x^2 + 18x – 35

5x^2-7x+25x-35
=5x^2+18x-35