Polynomials

Hong Kong

Stage 4 - Stage 5

Consider the function $y=x^2+10x+21$`y`=`x`2+10`x`+21.

Determine the zeros of the function. Write all solutions on the same line separated by a comma.

Easy

1min

Solve the following equation:

$\left(x^2-16\right)\left(x^2+12x+36\right)=0$(`x`2−16)(`x`2+12`x`+36)=0

Easy

1min

Solve the following equation:

$x^4-16x^2=0$`x`4−16`x`2=0

Easy

1min

Solve the following equation:

$64x^4-81x^2=0$64`x`4−81`x`2=0

Easy

2min

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