Prove that the expression (y+8)(y-7)-y(y+1) is negative for any value of y

-56

Step-by-step explanation:

=(y)(y)+(y)(−7)+(8)(y)+(8)(−7)+−y2+−y

=y2+−7y+8y+−56+−y2+−y

=y2+−7y+8y+−56+−y2+−y

=(y2+−y2)+(−7y+8y+−y)+(−56)

need more info

step-by-step explanation:

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: