Answer:
(a+2)
Step-by-step explanation:
a²+7a+10 = (a + 5) (a + 2)
a + 5
X <em>5a + ?a = 7a => 5a + 2a = 7a, 5 × ? = 10 => 5 × 2 = 10</em>
a + <em>2</em>
______
(a + 5) (a + 2)
15
Angle c is 180 - 146 = 34
All 3 angles add to 180:
(5y + 3) + (4y + 8) + 34 = 180
9y + 45 = 180
9y = 135
y = 15
x=2
z=45
d=6
hope this helps
