(x+4) (x+15)= mohon bantuan jabannya ya???

(x + 4)(x + 15)
= (x)(x) + (x)(15) + (4)(x) + (4)(15)
= x² + 15x + 4x + 60
= x² + 19x + 60

(x+4)(x+15)=x²+15x+4x+60
= x²+19x+60



semoga bisa membantu.....