(x + 4)(x - 4)
x^2 - 4x + 4x - 16
x^2 - 16
Hope this helps.
Answer:
x = 4
Step-by-step explanation:
4(2x + 5) = 52 ( divide both sides by 4 )
2x + 5 = 13 ( subtract 5 from both sides )
2x = 8 ( divide both sides by 2 )
x = 4
Step-by-step explanation:
for triangle HLM
180-2x
180-(3x+6)
H
2x=3x-10
x=10°
180-36=144°
36-20=16°
H=2x
H= 180-144-16= 20°