Answer:
(x - 3)(x + 7)
Step-by-step explanation:
x^2 + 4x - 21
=> x^2 + 7x - 3x - 21
=> x(x + 7) -3(x + 7)
=> (x + 7)(x - 3)
If you want to convert 0.57 into a fraction, you
can do it like this:
<span>
<span>0.57 equals to 57/100 </span></span><span>(you can't do anything else because 57 and 100 don't
have common factors).
</span><span><span /><span>The result is 57/100.</span>
</span>
100 minus 72 equals to 28. 28% of NOT getting an exam next week
