factorise a square + a + 1 by 4
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Answered by
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Answer:
a = -1/2
Step-by-step explanation:
a² + a + 1/4 = 0
⇒( 4a² + 4a + 1 )/4 = 0
⇒ 4a² + 4a + 1
⇒ 4a² + 2a + 2a + 1
⇒ 2a( 2a + 1 ) + 1( 2a + 1 )
⇒ ( 2a + 1 )( 2a + 1 )
⇒ a = -1/2
hope it helps...
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Answered by
2
Step-by-step explanation:
sorry I didn't not
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