Home › UP Board Class 10 › Mathematics › The zeroes of the quadratic polynomial $x^2+7x+1…
The zeroes of the quadratic polynomial $x^2+7x+10$ are
A$2$ and $5$
B$-2$ and $-5$
C$-2$ and $5$
D$2$ and $-5$
Answer & Solution
Correct answer: B. $-2$ and $-5$
Factorise: $x^2+7x+10=(x+2)(x+5)$. The polynomial is zero when $x+2=0$ or $x+5=0$, so the zeroes are $-2$ and $-5$.
Related questions
When variables and numbers appear on both sides, you must simplify:Equations needing more than one operation are described as taking more:Once a solution is found, it should be checked by substituting it back to get a statement The product of any number and its reciprocal equals:A fraction multiplying the variable is best removed by multiplying by its:Solving x divided by 4 equals 3 gives x equal to:Solving 4x equals 20 gives x equal to:Solving x minus 8 equals 5 gives x equal to: