Question

$(2 - \sqrt{2) {?}^{2} }$
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Answer 1

Step-by-step explanation:

Use identity : (a-b)²= a²-2ab+b²

$(2 - \sqrt{2} )^{2} = (2)^{2} - 2 \times 2 \times \sqrt{2} + ({ \sqrt{2} })^{2}$

$( Here \: \: a=2 \: \: and \: b= \sqrt{2} )$

$= 4 - 4 \sqrt{2 } + 2$

$= 6 - 4 \sqrt{2}$

Answer 2

Step-by-step explanation:

Total parasite plants are heterotrophic plants that depend entirely on the host plant, including shelter, water, food, for all their requirements. Examples: Orobanche aegyptiaca, cuscuta reflexa and striga asiatica. Partial parasites are those that rely, in portion, on their hosts.