x2+5x+6=0
Step 1: Identifying whether one or two brackets are needed.Because this question has number at the end you will need two brackets
(x+6)(x-1)=0 Step 2: find multiples of 6 that will add up to make +5
x=-6 or x=1 Step three: change the signs to make it add up to 0
2x2+11x+15=0 Step 1: Arrange the 2x2 into two brackets and divide it by the same number.
(2x )(2x) Step 2: multiply the last number with your first term. 15x2=30 2 Step 3: Find two multiples of 30 that adds up to the middle term-11
(2x+6)(2x+5) Step 4: Finally divide the one or both brackets by 2 2
(x+3)(x+5)
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