Solve : 9r^2 - r - 8
Answers
Answered by
0
Answer:
Use the sum-product pattern
9
2
−
−
8
9
2
+
8
−
9
−
8
*Common factor from the two pairs
9
2
+
8
−
9
−
8
(
9
+
8
)
−
1
(
9
+
8
)
*Rewrite in factored form
(
9
+
8
)
−
1
(
9
+
8
)
(
−
1
)
(
9
+
8
)
Solution
(
−
1
)
(
9
+
8
)
Answered by
0
Answer:
9r^2- 9r +8r- 8
9r(r- 1)+8(r- 1)
(9r+8)(r-1)
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