10-139. Without graphing, determine if the graph of each rule below has zero, one, or two x-intercepts. Show all work.
a.
y = 6x2 + 7x – 20
b.
y = x2 - 8x +16
c.
y = 2x2 + x + 3
d.
y= (2x+1)2

PLEASE SHOW EVERY STEP!!
This is from Core Connections Algebra, problem 10-139

the correct answer is d

hope this

m∠abd = m∠dbc

step-by-step explanation:

given : ab bisects ∠dbc

as we know that bisection means ab divides   ∠dbc   in two equal angles named as   ∠dba and   ∠abc

so, m∠abd = m∠dbc  

because ab bisects ∠dbc.

hence , the first statement m∠abd = m∠dbc is true.