simplify (x+y-z) (x-y+z) with the help of the formula (a+b) (a-b)= a²-b²
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Answer:
(x+y+z)(x-y-z)
Step-by-step explanation:
Expand
(
x
+
y
+
z
)
(
x
−
y
−
z
)
by multiplying each term in the first expression by each term in the second expression.
x
⋅
x
+
x
(
−
y
)
+
x
(
−
z
)
+
y
x
+
y
(
−
y
)
+
y
(
−
z
)
+
z
x
+
z
(
−
y
)
+
z
(
−
z
)
Simplify terms.
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x
2
−
y
2
−
y
z
−
z
y
−
z
2
Subtract
z
y
from
−
y
z
.
x
2
−
y
2
−
2
y
z
−
z
2
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