factorise a. -x2 -7x-10
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Step-by-step explanation:
-x2 -7x-10
-x2 -5x-2x-10
-x( x+5) -2(x+5)
(-x-2) (x+5)
so it's zeroes are -2,-5
Step-by-step explanation:
-x² - 7x - 10
-x² - 5x - 2x - 10
(-x - 2) (x + 5)