Find two numbers that when added equal #-13# and when multiplied equal #-30#. The numbers #2# and #-15# meet the requirements.

What I have in blue, I can factor by grouping. Here, I will rewrite the #b# term as the sum of two terms, so we can factor easily.

Pillow (plummer) block housings are designed to accommodate an insert bearing. The cast iron housings are strong, stiff and cost-effective. They are suitable for most applications and can be bolted directly to a support surface. This variant is compliant with Japanese standards.

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