math class 08 questions please answer these questions as fast as possible please!!
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Answer:
23)
4x
2
+9y
2
−z
2
+12xy
=4x
2
+12xy+9y
2
−z
2
=(2x+3y)
2
−z
2
=(2x+3y+z)(2x+3y−z).
Step-by-step explanation:
26)
x4 + x2 + 1 = (x4 + 2x2 + 1) – x2 = [(x2)2 + 2x2 + 1] – x2 = [x2 + 1]2 – x2 It is in the form of (a2 – b2) = (a + b)(a – b) Hence [x2 + 1]2 – x2 = [x2 + 1 + x] [x2 + 1 – x]
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