How do you factorise x^2+7x?

➷  You find the largest value or 'letter' that is shared by both

In this case, you can see the largest common value shared by x^2 and 7x is simply just 'x'

Place 'x' outside the parenthesis and inside the parenthesis place the values you would multiply by x to reach the original expression

Your answer is:

x(x + 7)

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if x decreases by 4 then y increases by 10

step-by-step explanation:

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70