A polynomial P(x₁, ..., xₙ is called quadral if it splits into a product of quadratic (or linear) functions in the complex field of coefficients.

His pitch was that fracking had transformed the production of gas from a hit-or-miss proposition to one that operated with an on and off switch. It was manufacturing, not wildcatting.

Seated at the same table with our Mr.—, was a gentleman, who, to use the current phrase, ‘had a brick in his hat.’

El adrea was quite dead. No more will he slink silently upon his unsuspecting prey.