1.

Factorise the following : (1) x^2+4x-21​

Answer»

156-16!.Step-by-step EXPLANATION:P b. THANK years GET the DAY my dear friend by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by I am by



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